Our Natural Health e-News Update-->
September 2008
Feature
Joint Benefits: Ease arthritis naturally
Updates
Vitamin C key to avoiding diabetes
Mom's vitamin D vital for child's dental health
Lycopene beats out drugs in cutting artery plaque
Can good food help with good grades?
Eat oily fish to protect eyes, brain in old age
Briefs
Aromatherapy for moms and babies
Vitamin C effective in cancer tests
Non-fish DHA just as good
Can goji juice make your day?
Herbicide link to prostate cancer
Artichoke for cholesterol
Antioxidants counter chemotherapy toxins
Joint Benefits: Ease arthritis naturally
Arthritis is one of the most common causes of physical disability among adults. The most common form of arthritis, osteoarthritis, affects 1 in 10 Canadians, while rheumatoid arthritis affects 1 in 100. Osteoarthritis is caused by the breakdown of cartilage that covers and protects the ends of bones within our joints. Osteoarthritis can affect any joint but usually affects hips, knees, hands and spine. Rheumatoid arthritis is considered an immune system disorder in which the body's defense system mistakenly attacks the joint lining, causing inflammation.
The antioxidant supplement reduced all symptoms by nearly 60%.
Fortunately, there is a growing acceptance in the health care community and the general public that natural therapies for arthritis pain and stiffness are available, and are effective. Here are a few recent developments in natural health research on arthritis.
Cod liver oil
Taking cod liver oil to relieve arthritis and joint pain is a well known folk remedy, but one that may have some scientific merit, according to Scottish researchers. They report that cod liver oil can help reduce the need for nonsteroidal anti-inflammatory (NSAID) medications in those with rheumatoid arthritis. In the study, people taking NSAIDs received either 10 grams (10 capsules) of a cod liver oil/fish oil blend or placebo capsules. The researchers found that after 9 months, 19 out of 49 people in the cod liver oil group were able to decrease their daily NSAID dose by more than 30%, compared with only 5 out 48 people in the placebo group. They also noted a significant improvement in pain scores in the cod liver oil group compared with the placebo group.
"Fish oil supplementation should be considered in rheumatoid arthritis patients to help them reduce their NSAID intake in order to attenuate the risks of gastrointestinal and cardiovascular adverse events associated with these drugs," said researcher Dr. Bernat Galarraga.
Boswellia
This gum resin is a relative of frankincense and has been shown to relieve pain and inflammation in both osteoarthritis and rheumatoid arthritis. Studies indicate that boswellia blocks leukotrienes, substances in the body that promote inflammation. In a recent study, an enriched extract of boswellia was proven to reduce the symptoms of osteoarthritis in as little as seven days. Boswellia has been used for thousands of years in the Indian system of traditional medicine known as Ayurveda. This study is the first to prove that an enriched extract of the plant can be used as a successful treatment.
The same authors have previously tested the safety of their remedy in animal experiments. They say that, "In this study, the compound was shown to have no major adverse effects in our osteoarthritis patients. It is safe for human consumption and even for long-term use."
Pycnogenol (Pine bark)
A study published last April shows Pycnogenol, an antioxidant plant extract from the bark of the French maritime pine tree, can reduce all osteoarthritis symptoms by 56%. Moreover, patients required dramatically less standard pain medication, which greatly improved the gastrointestinal complications resulting from the pain medication by 63%.
The randomized, double-blind, placebo-controlled study sampled 156 patients with osteoarthritis of the knee. Patients were administered 100 mg of Pycnogenol or placebo, daily for three months. After three months, scores for pain dropped significantly for the Pycnogenol treatment group and no significant effects were recorded for the placebo group. Scores for stiffness were reduced by 53% while scores for physical function were reduced by 57% in the Pycnogenol group and improvement under placebo was not significant. Overall well-being of patients (emotional function) was significantly enhanced with the Pycnogenol group, by 64% and 15% for the placebo group.
In addition, edema decreased in 79% of the Pycnogenol patients and only one percent in placebo-treated patients.
Sources: Rheumatology 2008;447:665–9; BioMed Central, July 29, 2008; Phytotherapy Research 2008;22(4):518-23
Vitamin C key to avoiding diabetes
While researchers warn that increasing diabetes rates point to an "epidemic," a long-term study indicates that getting enough vitamin C can dramatically lower the risk of type 2 diabetes. Researchers at Addenbrooke's Hospital and the University of Cambridge in England looked at 21,831 healthy, non-diabetic participants. Vitamin C levels were measured in plasma, and food frequency questionnaires were administered upon enrollment between 1993 and 1997. Over a 12-year follow-up period, 423 men and 312 women developed diabetes.
People who took in the most vitamin C dramatically lowered their risk.
After careful analysis, scientists discovered a strong protective effect of high vitamin C levels against diabetes. They found that those in the top 20% of plasma vitamin C had a 62% lower adjusted risk of developing diabetes compared with those in the lowest intake group. Those with the highest fruit and vegetable intake also had a 22% lower diabetes risk than subjects whose intake was lowest.
The study is thought to be the first to examine the association of plasma vitamin C and the development of diabetes. The findings suggest that suboptimal levels of vitamin C are present before the onset of the disease.
"The strong independent association observed in this prospective study, together with biological plausibility, provides persuasive evidence of a beneficial effect of vitamin C and fruit and vegetable intake on diabetes risk," the authors conclude. "Because fruit and vegetables are the main sources of vitamin C, the findings suggest that eating even a small quantity of fruit and vegetables may be beneficial and that the protection against diabetes increases progressively with the quantity of fruit and vegetables consumed."
Source: Archives of Internal Medicine, July 28, 2008
Mom's vitamin D vital for child's dental health
Vitamin D, also known as the "sunshine vitamin" because the body manufactures the vitamin after being exposed to sunshine, has a long list of health benefits. Recent research at the University of Manitoba suggests that vitamin D may provide protection from osteoporosis, hypertension (high blood pressure), cancer and several autoimmune diseases. But its primary function is to promote the body's absorption of calcium, which is essential to the development of healthy bones and teeth. And new findings show vitamin D to be equally important to a baby's teeth, even before they are born.
Teeth begin to develop in the womb.
For their study, Canadian researchers at the University of Manitoba and in Victoria measured the vitamin D levels of 206 women in their second trimester of pregnancy. Dr. Robert Schroth, lead researcher, explained that the second trimester of pregnancy is when primary teeth begin to develop and calcify. They found only 21 (10.5%) of the women to have adequate levels of the vitamin. These levels were consistent with the women's intake of milk and prenatal vitamins.
Researchers then examined the children born to the women in the study for dental health at about 16 months. They found 22% had enamel defects and 34% showed signs of tooth decay. Enamel defects during infancy significantly increase the likelihood of tooth decay developing during early childhood.
The mothers of the children with signs of early tooth decay did have significantly lower levels of vitamin D during pregnancy than the mothers of children who did not have cavities.
The study is thought to be the first to document a link between a mother's vitamin D intake during pregnancy and her child's dental health.
Source: University of Manitoba, Jul 28, 2008
Lycopene beats out drugs in cutting artery plaque
Chinese researchers report that supplementing with lycopene, the carotenoid that give tomatoes their red colour, may be as effective as statin drugs in reducing plaque formation in the arteries. If the results of the animal study can be repeated in humans, they will add to the body of research supporting the potential heart health benefits of lycopene, best known for benefits in prostate health.
Lycopene, found in tomatoes, may have a role in heart health.
Researchers from Central South University in Changsha, China divided 40 male adult rabbits into five equal groups to consume a standard diet; a high-fat diet; a high-fat diet plus 4 or 12mg/kg of lycopene; or the high-fat diet plus 10mg/kg of fluvastatin. The animals consumed the test diets for eight weeks.
They found that the animals fed only the high-fat diet had higher levels of total and LDL cholesterol, triacylglycerols and oxidised LDL than animals fed the standard diet. However, animals fed the high-fat diet and supplemented with lycopene or fluvastatin had improved levels of these biomarkers. In each case, the lycopene worked better than the statin drug.
"Lycopene intervention reduced the increase in ox-LDL levels in rabbits on the high-fat diet, whereas fluvastatin did not show such an effect. The cause of this difference is at present not known, although the result speaks in favour of lycopene," the researchers reported.
"These findings provide a theoretical rationale for the use of lycopene as a preventive in atherosclerosis," they concluded.
Source: Nutrition, Jun 30, 2008 (doi: 10.1016/j.nut.2008.05.006)
Can good food help with good grades?
What our children eat affects more than their health, it impacts their future. New research conducted by Paul Veugelers, professor at the University of Alberta's School of Public Health, has shown that overall diet quality affects academic performance.
A study shows that healthy eating is good for kids' bodies and brains.
In 2003, Veugelers and his team conducted the large-scale Children's Lifestyle and School-performance Study (CLASS) involving 4,589 fifth-graders in Nova Scotia. The researchers investigated the associations between diet quality, socio-economic determinants and academic performance. Veugelers found that students who ate an adequate and varied amount of fruit, vegetables, protein, fibre and other components of a healthy diet were significantly more likely to perform well on literacy tests. In an article published in the Journal of School Health, authors concluded that "This study extends current knowledge in this area by demonstrating the independent importance of overall diet quality to academic performance."
Shortly after the CLASS survey, the province conducted a standardized Elementary Literacy Assessment. When CLASS researchers linked the literacy test results with the nutrition questionnaires, they found that "students with decreased overall diet quality were significantly more likely to perform poorly on the assessment. Girls performed better than boys as did children from socioeconomically advantaged families. Children attending better schools and living in wealthy neighborhoods also performed better."
Preventing childhood overweight and obesity while improving academic performance can be addressed through school-based programs that promote healthy eating and physical activity. "In light of the current childhood overweight epidemic and underlying poor dietary habits, prevention is a public health priority," said Veugelers.
Source: University of Alberta School of Public Health, Jun 2, 2008
Eat oily fish to protect eyes, brain in old age
Two recent studies point to the benefits of DHA and EPA essential fatty acids from fish, particularly for older people. In one study, British researchers found that eating oily fish once a week may reduce age-related macular degeneration (AMD) which is the major cause of blindness and poor vision in adults in western countries. There are two types of AMD, wet and dry. Of the two, wet AMD is the main cause of vision loss. The findings show that people who habitually consume oily fish at least once a week compared with less than once a week are 50% less likely to have wet AMD. There was no benefit from consumption of non oily white fish. People who took in the most DHA and EPA (300 mg per day and above) were 70% less likely to have wet AMD.
Just one serving of fish per week can help!
Two 3oz servings a week of oily fish, such as salmon, tuna or mackerel, provides about 500 mg of DHA and EPA per day.
Meanwhile, Finnish researchers found that eating tuna and other types of oily fish may help lower the risk of cognitive decline and stroke in healthy older adults. For the study, 3,660 people age 65 and older underwent brain scans to detect small lesions in the brain that can cause loss of thinking skills, stroke or dementia. Scans were performed again five years later. Data revealed that people who ate broiled or baked tuna and other fish high in omega-3 fatty acids three times or more per week had a nearly 26% lower risk of having the silent brain lesions that can cause dementia and stroke compared to people who did not eat fish regularly. Eating just one serving of this type of fish per week led to a 13% lower risk.
Sources: London School of Hygiene & Tropical Medicine, Aug 8, 2008; American Academy of Neurology, Aug 4, 2008
Aromatherapy for moms and babies
Having trouble getting your baby to sleep? Try a lavender-scented bath! In a recent study, young infants were given a bath with or without lavender-scented bath oil. The researchers noted that the mothers in the lavender bath oil group were more relaxed, smiled and touched their infants more during the bath. Their infants looked at them more during bath time, cried less and spent more time in deep sleep after bath. The cortisol levels of this group of mothers and infants significantly decreased. The findings support a body of research showing the relaxing and sleep-inducing properties of lavender aroma.
Source: Early Hum Dev. 2008 Jun;84(6):399-401
Vitamin C effective in cancer tests
High-dose injections of vitamin C reduced tumour weight and growth rate by about 50 percent in mouse models of brain, ovarian and pancreatic cancers, report researchers from the National Institutes of Health. The researchers traced vitamin C's anticancer effect to the formation of hydrogen peroxide in the extracellular fluid surrounding the tumours. Normal cells were unaffected. In their laboratory experiments on 43 cancer and 5 normal cell lines, the researchers saw that high concentrations of vitamin C had anticancer effects in 75% of cancer cell lines tested.
Source: National Institutes of Health, Aug 4, 2008
Non-fish DHA just as good
Looking for a plant source of DHA with all the benefits of fish oil DHA? Algal oil (DHA oil from algae) may be just the thing. In a recent study involving 32 healthy men and women who took 600 mg DHA/day from algal oil capsules, researchers found the DHA to be as bioavailable as that found in assayed portions of cooked salmon. Levels of DHA increased by about 80% in plasma phospholipids and about 25% in erythrocytes in both DHA capsule and fish groups. Both interventions were also well tolerated. These results suggest that for persons who do not consume fish, supplementation with algal oil may be a safe and effective way of raising levels of DHA.
Source: Am Diet Assoc, 2008; 108(7): 1204-9
Drinking a cup of black tea each day may cut the risk of developing Parkinson's disease by as much as 71%, according to a new study conducted by researchers from the National Neuroscience Institute in Singapore.
Can goji juice make your day?
In a small randomized, double-blind, placebo-controlled clinical trial on 35 healthy adults, drinking 120 mL/day of goji berry juice significantly improved energy level, athletic performance, quality of sleep, ease of awakening, ability to focus on activities, mental acuity, calmness, regularity of gastrointestinal functions and feelings of health, contentment and happiness, and significantly reduced fatigue and stress over a period of 14 days. The authors conclude, "The data strongly suggest that further research is indicated to confirm and extend knowledge of the potential effects of Lycium barbarum [goji berry] upon human health."
Source: J Altern Complement Med, 2008; 14(4): 403-12
Herbicide link to prostate cancer
Vietnam War veterans exposed to the pesticide known as Agent Orange (tetrachlorodibenzo-para-dioxin, or TCDD) have greatly increased risks of prostate cancer and even greater risks of getting the most aggressive form of the disease, compared to those who were not exposed. The findings are the first to reliably link the herbicide with this form of cancer. The study involved more than 13,000 Vietnam veterans who were stratified into two groups: exposed or not exposed to Agent Orange between 1962 and 1971. The study revealed that twice as many men exposed to Agent Orange were identified with prostate cancer. In addition, Agent Orange-exposed men were diagnosed two-and-a-half years younger and were nearly four times more likely to present with metastatic disease.
Source: UC Davis Cancer Center, Aug 5, 2008
Artichoke for cholesterol
Researchers at the University of Reading have found that artichoke leaf extract can help lower cholesterol in otherwise healthy people with moderately raised levels. Once plasma cholesterol reaches a certain level, drugs such as statins are often prescribed to help reduce it. Intervention before concentrations reaches these levels may help reduce the risk of developing cardiovascular diseases without the need for drugs. For the trial, 75 volunteers were given 1280mg (4 capsules) of artichoke extract or a matched placebo, each day for 12 weeks. Artichoke consumption resulted in a significant reduction in total plasma cholesterol after the intervention period.
Source: Medical News Today, Jul 3, 2008
Saturday, September 13, 2008
Natural Health News Update - July 2008
Our Natural Health e-News Update-->
July/August 2008
Feature
What's new to beat the blues?
Updates
Probiotics tame allergy response
Lycopene improves gum disease
Calcium reduces bone fractures
Herbal help for pesky canker sores
Omega-3 for macular degeneration
Briefs
Thicker hair with silica
Ginger: how it soothes
Zinc cuts cold time
Compound inhibits fat cells
Vitamin D for heart health
Organic milk is best: study
What's new to beat the blues?
On these hot, sunny days of summer, most of us find ourselves in a good state of mind, looking forward to a weekend spent with family and friends, or perhaps an upcoming vacation. But statistics show that 5% of Canadians are currently experiencing a major depressive episode. For this group, sunny thoughts are few and far between, and likely to be even harder to come by as autumn and winter approach.
Researchers found that an omega-3 fatty acid had the same therapeutic effects as Prozac.
While pharmaceutical drugs are still the treatment of choice for most people with depression, ongoing research into nutritional and herbal medicines indicates that there are other effective options. Here are a few of the most recent revelations.
Low mineral levels linked?
UK researchers at the Institute of Health Sciences, University of Reading, report that low levels of selenium were significantly associated with depression among elderly subjects. At the start of the eight-week trial, 29% of subjects showed significant symptoms of depression. Although all of the subjects had selenium levels within the "normal" range, serum selenium levels were still significantly associated with depression. Not a single subject who tested borderline or positive on the hospital anxiety and depression (HAD) rating scale had selenium levels greater than 1.2 mcg. After micronutrient supplementation, significant reductions in depression and significant increases in serum selenium levels were found. "In light of the prevalence of depression among older people living in nursing homes or residential homes, these results are significant," the researchers conclude.
Herbal help from rhodiola
Last year, scientists from Armenian State Medical University reported on a randomized, double-blind, placebo-controlled, phase III clinical trial involving 89 subjects with mild to moderate depression. The subjects who took a standardized extract of Rhodiola rosea experienced a significant improvement in symptoms of depression, insomnia and emotional instability after just six weeks, compared to subjects who received a placebo. No significant adverse effects were reported by the subjects.
EPA on par with Prozac
In another trial, the omega-3 fatty acid EPA (eicosapentaenoic acid) was deemed equal to a common drug for depression. The study involved 60 outpatients diagnosed with major depressive disorder. Researchers found that daily supplementation with 1,000 mg of EPA was as effective as Prozac in the alleviation of symptoms over eight weeks.
Furthermore, treatment with the combination of Prozac and EPA yielded even better results from the fourth week of treatment on. In all, 50% of those taking Prozac alone, 56% of those taking EPA alone, and 81% of those taking the combination had at least a 50% decrease in depression symptoms, assessed via the Hamilton Depression Rating Scale.
The researchers conclude that, "EPA and fluoxetine [Prozac] had equal therapeutic effects in major depressive disorder. EPA + fluoxetine combination was superior to either of them alone."
Sources: Statistics Canada; Gerontology, 2008 May 8; Australia/New Zealand Journal of Psychiatry, 2008; 42(3): 192-8; Nord J Psychiatry, 2007; 61(5): 343-8
Probiotics tame allergy response
In the first human study of its kind, scientists at the Institute of Food Research found that probiotics can modify the immune system's response to grass pollen, a common cause of seasonal hay fever.
Taking a daily probiotic "changed the way" the body responded to pollen.
"This was a pilot study based on small numbers of patients, but we were fascinated to discover a response," says research leader Professor Claudio Nicoletti. "The probiotic significantly reduced the production of molecules associated with allergy."
Hay fever is an allergic reaction to pollen or fungal spores, most commonly grass pollen. The immune system mistakes the spores for harmful invaders and produces excessive amounts of the antibody IgE to bind to them and fight them off. IgE stimulates the release of histamine, which produces the symptoms of hay fever.
In this study, volunteers with a history of seasonal hay fever drank a daily milk drink with or without live bacteria (Lactobacillus casei) over 5 months.
Blood samples were taken before the grass pollen season, then again when it was at its peak, and 4 weeks after the end of season. There were no significant differences in levels of IgE between the two groups at the start of the study, but IgE levels were lower in the probiotic group both at the peak season and afterwards. At the same times, levels of an antibody thought to play a protective role against allergic reactions were higher.
"The probiotic strain we tested changed the way the body's immune cells respond to grass pollen, restoring a more balanced immune response," says Dr Kamal Ivory, a senior member of the research group.
Source: Institute of Food Research, June 3, 2008
Lycopene improves gum disease
Gingivitis is a common dental problem which develops when bacteria multiply and build up between your teeth and gums, resulting in irritation, inflammation and possible bleeding. If not addressed, gingivitis can lead to more serious gum diseases, and eventually tooth loss.
Indian researchers from Krishnadevaraya College of Dental Sciences report on a randomized, double-blind study involving 20 healthy subjects showing clinical signs of gingivitis. Among these subjects, supplementation with 8 mg per day of lycopene for a period of 2 weeks was found to significantly reduce bleeding index and scores on measures of gingivitis. In those taking the lycopene, researchers noted less salivary uric acid levels and a reduction in gingivitis at 1 and 2 weeks, compared to subjects receiving placebo. The authors conclude, "The results presented in this study suggest that lycopene shows great promise as a treatment modality in gingivitis. The possibility of obtaining an additive effect by combining routine oral prophylaxis with lycopene is also an exciting possibility, which deserves further study."
Source: Oral Health Prev Dent. 2007;5(4):327-36
Calcium reduces bone fractures
Results of a new trial suggest that taking a daily calcium supplement can dramatically reduce the risk of bone fractures. Researchers from University Hospital Zurich and Dartmouth Medical School in New Hampshire also report that the benefits were no longer observed when supplementation was stopped.
Average citizens in a developed country are at risk of sustaining two fractures over the course of their lifetime.
Among 930 healthy people (average age 61), far fewer fractures were seen in the group getting a daily calcium supplement than in those receiving a placebo.
The participants took either the calcium supplement, which contained 1,200 mg of elemental calcium, or a placebo for four years. They were then followed for another 10.8 years.
Measures of the primary outcomes of all fractures and minimal trauma fractures showed that people in the calcium group experienced 46 fractures, 15 of which were from minimal trauma, while 54 fractures were documented in the placebo group, 29 of which were from minimal trauma. A minimal trauma fracture is defined as being caused by falling from a sitting, standing, or walking position and height.
The researchers calculated that calcium supplements reduced the risk of fracture by 72%, but no difference between the groups was observed during the follow-up period when no supplements were consumed.
"Calcium supplementation reduced the risk of all fractures and of minimal trauma fractures among healthy individuals," concluded the researchers. "The benefit appeared to dissipate after treatment was stopped."
Source: Am J Clin Nutr 2008: 87(6):1945-1951
Herbal help for pesky canker sores
Canker sores appear as shallow mouth ulcers of different sizes and affects one in five North Americans. They can be caused by food allergies and hormonal changes, and also can cause severe mouth pain. But these bothersome sores may be relieved by licorice root herbal extract.
Genetic predisposition may underlie most cases of recurring canker sores.
Researchers examined the effects of licorice extract applied via an adhesive patch for treatment of canker sores versus no treatment. After seven days of treatment, ulcer size in the group who took the licorice was significantly lower, while ulcer size in the no-treatment group had increased 13%.
Licorice, typically in the form of DGL (deglycyrrhizinated licorice) is also widely used as a treatment for gastric ulcers. DGL lozenges are available in health food stores and may be an alternative to adhesive patches.
Among the causes of canker sores, a genetic predisposition might be the biggest cause, says Michael Martin, PhD, lead author of the study. "When both parents have a history of canker sores, the likelihood of their children developing them can be as high as 90%," he says.
The most serious side effect of canker sores is sharp pain in the mouth, which can interfere with an individual's quality of life. Dr. Martin revealed that "in addition to speeding healing of the canker sores, the [licorice] helped to reduce pain after just three days of treatment."
Eric Shapira, DDS, MAGD, an Academy of General Dentistry spokesperson, adds: "Increasing vitamins and other herbs, such as vitamin C and zinc, can help treat canker sores because they help to regenerate tissue cells."
Source: General Dentistry, Mar/Apr 2008
Omega-3 for macular degeneration
According to Australian researchers, eating cold-water fish and other foods that contain omega-3 fatty acids may reduce the risk of age-related macular degeneration (AMD), the leading cause of vision loss in elderly people.
The researchers reviewed nine published studies that included a total of 88,974 people, including 3,203 people with AMD. The combined outcomes from the studies suggest that a high dietary intake of omega-3 fatty acids is associated with a 38% reduced risk of late (advanced) AMD, and that eating fish twice a week is associated with a reduced risk of both early and late AMD.
The University of Melbourne scientists noted that omega-3 fatty acids form a vital part of the layer of nerve cells in the retina. Outer cells of the retina are continually shed and regenerated. Because of this, deficiencies in omega-3 fatty acids may cause AMD.
Source: Health Day News, June 13, 2008
Thicker hair with silica
According to a new study by German researchers, supplementing with 1 tablespoon (15 ml) of silica (silicon) in gel form for six months can increase hair thickness by almost 13%. The study involved 55 healthy adult women with thin hair. Lead researcher I. Zschockel explains, "Though largely determined by heredity, hair thickness is also influenced by various factors such as nutrition." Zschockel added that the study participants began noticing improvements in hair thickness at three months, after which thickness continued to increase.
Source: Kosmetische Medizin, June 2007
In one study, taking 500 mg of vitamin C per day increased fat burning fourfold.
Ubiquinol
What is it? The reduced form of coenzyme Q10, as typically found in human plasma.
Why use it? To ensure greater absorption of CoQ10 for energy and heart health.
What's the research?In a study this year, critically ill patients with congestive heart failure who supplemented with ubiquinol for just three months experienced a 24 to 50% increase in their hearts' ability to pump blood. In some cases, patients' plasma levels of coQ10 more than tripled.
Ginger: how it soothes
Ginger is a traditional herbal remedy used to ease digestive discomfort and nausea. A new study reveals that ginger stimulates digestion by speeding up the movement of food from the stomach into the upper small intestine. Researchers had 24 healthy men eat a bowl of soup after taking either 1,200 mg of ginger or a placebo. Using ultrasound, researchers saw that muscle contractions in the stomach, which help to move food into the upper small intestine, were more frequent and the stomach emptied more quickly after ginger than placebo. After eating the soup, mild digestive discomfort was reported only in those who had placebo.
Source: Eur J Gastroenterol Hepatol 2008;20:436–40
Zinc cuts cold time
To prepare for the next cold season, have zinc lozenges on hand! Researchers found that taking zinc lozenges at the first sign of a cold could lead to milder symptoms and quicker recovery. Among 50 people given either lozenges (13 mg of zinc) or a placebo, taken every few hours while awake for as long as symptoms lasted, those who took the zinc had cold symptoms for four days versus seven days with placebo.
Source: J Infect Dis 2008;197:795–802
Compound inhibits fat cells
Resveratrol, a compound in grapes and red wine, reduces the number of fat cells and may one day be used to treat or prevent obesity, according to a new study. German researchers found that resveratrol inhibited pre-fat cells from increasing and prevented them from converting into mature fat cells. Also, resveratrol hindered fat storage. Most interesting, according to the lead author, was that resveratrol reduced production of substances that may be linked to the development of obesity-related disorders, such as diabetes and clogged coronary arteries.
Source: Endocrine Society, Jun 11, 2008
Vitamin D for heart health
It's known that deaths from heart attack occur more frequently in higher latitudes and in the winter months. To find out why, Harvard researchers reviewed medical records and blood samples of 454 men who had non-fatal heart attack or fatal heart disease and compared them with samples from 900 living men with no history of heart disease. Those with low levels of vitamin D - common in winter months - were more likely to have a heart attack than those with higher levels.
Source: Archives of Internal Medicine (2008). 168[11]:1174 - 1180
Organic milk is best: study
Cows that graze as nature intended are producing healthier and better quality milk, according to UK researchers. The study by Newcastle University scientists found that cows on organic farms in the UK produce milk that contains significantly higher beneficial fatty acids, antioxidants and vitamins than their non-organic counterparts.
The scientists found that levels of nutritionally desirable fatty acids and antioxidants were highest in the summer, when cows are eating fresh grass and clove. One beneficial fat called conjugated linoleic acid (CLA) was 60% higher in the organic milk. CLA, omega-3 fatty acids, vitamin E and carotenoids have all been linked to a reduced risk of cardiovascular disease and cancer.
Source: The Northern Echo, May 29, 2008
These articles are based upon current scientific studies and professional opinions; however, they are not to be regarded or relied upon as medical advice for self-diagnosis or treatment of any condition or disease.
Copyright 2008 Health News Update
July/August 2008
Feature
What's new to beat the blues?
Updates
Probiotics tame allergy response
Lycopene improves gum disease
Calcium reduces bone fractures
Herbal help for pesky canker sores
Omega-3 for macular degeneration
Briefs
Thicker hair with silica
Ginger: how it soothes
Zinc cuts cold time
Compound inhibits fat cells
Vitamin D for heart health
Organic milk is best: study
What's new to beat the blues?
On these hot, sunny days of summer, most of us find ourselves in a good state of mind, looking forward to a weekend spent with family and friends, or perhaps an upcoming vacation. But statistics show that 5% of Canadians are currently experiencing a major depressive episode. For this group, sunny thoughts are few and far between, and likely to be even harder to come by as autumn and winter approach.
Researchers found that an omega-3 fatty acid had the same therapeutic effects as Prozac.
While pharmaceutical drugs are still the treatment of choice for most people with depression, ongoing research into nutritional and herbal medicines indicates that there are other effective options. Here are a few of the most recent revelations.
Low mineral levels linked?
UK researchers at the Institute of Health Sciences, University of Reading, report that low levels of selenium were significantly associated with depression among elderly subjects. At the start of the eight-week trial, 29% of subjects showed significant symptoms of depression. Although all of the subjects had selenium levels within the "normal" range, serum selenium levels were still significantly associated with depression. Not a single subject who tested borderline or positive on the hospital anxiety and depression (HAD) rating scale had selenium levels greater than 1.2 mcg. After micronutrient supplementation, significant reductions in depression and significant increases in serum selenium levels were found. "In light of the prevalence of depression among older people living in nursing homes or residential homes, these results are significant," the researchers conclude.
Herbal help from rhodiola
Last year, scientists from Armenian State Medical University reported on a randomized, double-blind, placebo-controlled, phase III clinical trial involving 89 subjects with mild to moderate depression. The subjects who took a standardized extract of Rhodiola rosea experienced a significant improvement in symptoms of depression, insomnia and emotional instability after just six weeks, compared to subjects who received a placebo. No significant adverse effects were reported by the subjects.
EPA on par with Prozac
In another trial, the omega-3 fatty acid EPA (eicosapentaenoic acid) was deemed equal to a common drug for depression. The study involved 60 outpatients diagnosed with major depressive disorder. Researchers found that daily supplementation with 1,000 mg of EPA was as effective as Prozac in the alleviation of symptoms over eight weeks.
Furthermore, treatment with the combination of Prozac and EPA yielded even better results from the fourth week of treatment on. In all, 50% of those taking Prozac alone, 56% of those taking EPA alone, and 81% of those taking the combination had at least a 50% decrease in depression symptoms, assessed via the Hamilton Depression Rating Scale.
The researchers conclude that, "EPA and fluoxetine [Prozac] had equal therapeutic effects in major depressive disorder. EPA + fluoxetine combination was superior to either of them alone."
Sources: Statistics Canada; Gerontology, 2008 May 8; Australia/New Zealand Journal of Psychiatry, 2008; 42(3): 192-8; Nord J Psychiatry, 2007; 61(5): 343-8
Probiotics tame allergy response
In the first human study of its kind, scientists at the Institute of Food Research found that probiotics can modify the immune system's response to grass pollen, a common cause of seasonal hay fever.
Taking a daily probiotic "changed the way" the body responded to pollen.
"This was a pilot study based on small numbers of patients, but we were fascinated to discover a response," says research leader Professor Claudio Nicoletti. "The probiotic significantly reduced the production of molecules associated with allergy."
Hay fever is an allergic reaction to pollen or fungal spores, most commonly grass pollen. The immune system mistakes the spores for harmful invaders and produces excessive amounts of the antibody IgE to bind to them and fight them off. IgE stimulates the release of histamine, which produces the symptoms of hay fever.
In this study, volunteers with a history of seasonal hay fever drank a daily milk drink with or without live bacteria (Lactobacillus casei) over 5 months.
Blood samples were taken before the grass pollen season, then again when it was at its peak, and 4 weeks after the end of season. There were no significant differences in levels of IgE between the two groups at the start of the study, but IgE levels were lower in the probiotic group both at the peak season and afterwards. At the same times, levels of an antibody thought to play a protective role against allergic reactions were higher.
"The probiotic strain we tested changed the way the body's immune cells respond to grass pollen, restoring a more balanced immune response," says Dr Kamal Ivory, a senior member of the research group.
Source: Institute of Food Research, June 3, 2008
Lycopene improves gum disease
Gingivitis is a common dental problem which develops when bacteria multiply and build up between your teeth and gums, resulting in irritation, inflammation and possible bleeding. If not addressed, gingivitis can lead to more serious gum diseases, and eventually tooth loss.
Indian researchers from Krishnadevaraya College of Dental Sciences report on a randomized, double-blind study involving 20 healthy subjects showing clinical signs of gingivitis. Among these subjects, supplementation with 8 mg per day of lycopene for a period of 2 weeks was found to significantly reduce bleeding index and scores on measures of gingivitis. In those taking the lycopene, researchers noted less salivary uric acid levels and a reduction in gingivitis at 1 and 2 weeks, compared to subjects receiving placebo. The authors conclude, "The results presented in this study suggest that lycopene shows great promise as a treatment modality in gingivitis. The possibility of obtaining an additive effect by combining routine oral prophylaxis with lycopene is also an exciting possibility, which deserves further study."
Source: Oral Health Prev Dent. 2007;5(4):327-36
Calcium reduces bone fractures
Results of a new trial suggest that taking a daily calcium supplement can dramatically reduce the risk of bone fractures. Researchers from University Hospital Zurich and Dartmouth Medical School in New Hampshire also report that the benefits were no longer observed when supplementation was stopped.
Average citizens in a developed country are at risk of sustaining two fractures over the course of their lifetime.
Among 930 healthy people (average age 61), far fewer fractures were seen in the group getting a daily calcium supplement than in those receiving a placebo.
The participants took either the calcium supplement, which contained 1,200 mg of elemental calcium, or a placebo for four years. They were then followed for another 10.8 years.
Measures of the primary outcomes of all fractures and minimal trauma fractures showed that people in the calcium group experienced 46 fractures, 15 of which were from minimal trauma, while 54 fractures were documented in the placebo group, 29 of which were from minimal trauma. A minimal trauma fracture is defined as being caused by falling from a sitting, standing, or walking position and height.
The researchers calculated that calcium supplements reduced the risk of fracture by 72%, but no difference between the groups was observed during the follow-up period when no supplements were consumed.
"Calcium supplementation reduced the risk of all fractures and of minimal trauma fractures among healthy individuals," concluded the researchers. "The benefit appeared to dissipate after treatment was stopped."
Source: Am J Clin Nutr 2008: 87(6):1945-1951
Herbal help for pesky canker sores
Canker sores appear as shallow mouth ulcers of different sizes and affects one in five North Americans. They can be caused by food allergies and hormonal changes, and also can cause severe mouth pain. But these bothersome sores may be relieved by licorice root herbal extract.
Genetic predisposition may underlie most cases of recurring canker sores.
Researchers examined the effects of licorice extract applied via an adhesive patch for treatment of canker sores versus no treatment. After seven days of treatment, ulcer size in the group who took the licorice was significantly lower, while ulcer size in the no-treatment group had increased 13%.
Licorice, typically in the form of DGL (deglycyrrhizinated licorice) is also widely used as a treatment for gastric ulcers. DGL lozenges are available in health food stores and may be an alternative to adhesive patches.
Among the causes of canker sores, a genetic predisposition might be the biggest cause, says Michael Martin, PhD, lead author of the study. "When both parents have a history of canker sores, the likelihood of their children developing them can be as high as 90%," he says.
The most serious side effect of canker sores is sharp pain in the mouth, which can interfere with an individual's quality of life. Dr. Martin revealed that "in addition to speeding healing of the canker sores, the [licorice] helped to reduce pain after just three days of treatment."
Eric Shapira, DDS, MAGD, an Academy of General Dentistry spokesperson, adds: "Increasing vitamins and other herbs, such as vitamin C and zinc, can help treat canker sores because they help to regenerate tissue cells."
Source: General Dentistry, Mar/Apr 2008
Omega-3 for macular degeneration
According to Australian researchers, eating cold-water fish and other foods that contain omega-3 fatty acids may reduce the risk of age-related macular degeneration (AMD), the leading cause of vision loss in elderly people.
The researchers reviewed nine published studies that included a total of 88,974 people, including 3,203 people with AMD. The combined outcomes from the studies suggest that a high dietary intake of omega-3 fatty acids is associated with a 38% reduced risk of late (advanced) AMD, and that eating fish twice a week is associated with a reduced risk of both early and late AMD.
The University of Melbourne scientists noted that omega-3 fatty acids form a vital part of the layer of nerve cells in the retina. Outer cells of the retina are continually shed and regenerated. Because of this, deficiencies in omega-3 fatty acids may cause AMD.
Source: Health Day News, June 13, 2008
Thicker hair with silica
According to a new study by German researchers, supplementing with 1 tablespoon (15 ml) of silica (silicon) in gel form for six months can increase hair thickness by almost 13%. The study involved 55 healthy adult women with thin hair. Lead researcher I. Zschockel explains, "Though largely determined by heredity, hair thickness is also influenced by various factors such as nutrition." Zschockel added that the study participants began noticing improvements in hair thickness at three months, after which thickness continued to increase.
Source: Kosmetische Medizin, June 2007
In one study, taking 500 mg of vitamin C per day increased fat burning fourfold.
Ubiquinol
What is it? The reduced form of coenzyme Q10, as typically found in human plasma.
Why use it? To ensure greater absorption of CoQ10 for energy and heart health.
What's the research?In a study this year, critically ill patients with congestive heart failure who supplemented with ubiquinol for just three months experienced a 24 to 50% increase in their hearts' ability to pump blood. In some cases, patients' plasma levels of coQ10 more than tripled.
Ginger: how it soothes
Ginger is a traditional herbal remedy used to ease digestive discomfort and nausea. A new study reveals that ginger stimulates digestion by speeding up the movement of food from the stomach into the upper small intestine. Researchers had 24 healthy men eat a bowl of soup after taking either 1,200 mg of ginger or a placebo. Using ultrasound, researchers saw that muscle contractions in the stomach, which help to move food into the upper small intestine, were more frequent and the stomach emptied more quickly after ginger than placebo. After eating the soup, mild digestive discomfort was reported only in those who had placebo.
Source: Eur J Gastroenterol Hepatol 2008;20:436–40
Zinc cuts cold time
To prepare for the next cold season, have zinc lozenges on hand! Researchers found that taking zinc lozenges at the first sign of a cold could lead to milder symptoms and quicker recovery. Among 50 people given either lozenges (13 mg of zinc) or a placebo, taken every few hours while awake for as long as symptoms lasted, those who took the zinc had cold symptoms for four days versus seven days with placebo.
Source: J Infect Dis 2008;197:795–802
Compound inhibits fat cells
Resveratrol, a compound in grapes and red wine, reduces the number of fat cells and may one day be used to treat or prevent obesity, according to a new study. German researchers found that resveratrol inhibited pre-fat cells from increasing and prevented them from converting into mature fat cells. Also, resveratrol hindered fat storage. Most interesting, according to the lead author, was that resveratrol reduced production of substances that may be linked to the development of obesity-related disorders, such as diabetes and clogged coronary arteries.
Source: Endocrine Society, Jun 11, 2008
Vitamin D for heart health
It's known that deaths from heart attack occur more frequently in higher latitudes and in the winter months. To find out why, Harvard researchers reviewed medical records and blood samples of 454 men who had non-fatal heart attack or fatal heart disease and compared them with samples from 900 living men with no history of heart disease. Those with low levels of vitamin D - common in winter months - were more likely to have a heart attack than those with higher levels.
Source: Archives of Internal Medicine (2008). 168[11]:1174 - 1180
Organic milk is best: study
Cows that graze as nature intended are producing healthier and better quality milk, according to UK researchers. The study by Newcastle University scientists found that cows on organic farms in the UK produce milk that contains significantly higher beneficial fatty acids, antioxidants and vitamins than their non-organic counterparts.
The scientists found that levels of nutritionally desirable fatty acids and antioxidants were highest in the summer, when cows are eating fresh grass and clove. One beneficial fat called conjugated linoleic acid (CLA) was 60% higher in the organic milk. CLA, omega-3 fatty acids, vitamin E and carotenoids have all been linked to a reduced risk of cardiovascular disease and cancer.
Source: The Northern Echo, May 29, 2008
These articles are based upon current scientific studies and professional opinions; however, they are not to be regarded or relied upon as medical advice for self-diagnosis or treatment of any condition or disease.
Copyright 2008 Health News Update
Friday, June 6, 2008
Natural Health News Update - June 2008
Our Natural Health e-News Update-->
June 2008
Feature
How to revitalize dry, wrinkled skin
Updates
Cod liver oil: help for painful joints
Vitamin protects athletes: study
New hope for prostate cancer?
Stressed and tired? Try green tea
Strict diet helps arthritis patients
Briefs
Collagen for joint pain
Sun protection from spaghetti?
Men's diet affects fertility
Most men lack vitamin D
Green tea and sleep apnea
Drug culture?
How to revitalize dry, wrinkled skin
Are you hoping to maintain or recapture supple, youthful-looking skin and decrease wrinkles and dryness? While some topical treatments may offer benefits, addressing skin health from the outside can only go so far. For real, lasting and noticeable change to occur in our skin, research reveals we require two critical nutrients proven to stimulate collagen formation and improve skin hydration.
While topical treatments may help, feeding the skin's collagen structure can provide lasting, noticeable results.
What's happening?
Moisture loss in the skin begins as early as our 20s, and UV exposure only speeds this dehydration. It is increased again when estrogen levels start to decline during perimenopause and menopause. Skin dehydration is associated with scaly, taut skin, superficial lines and wrinkles, and premature aging.
Collagen, the protein at the base of our skin structure, binds with water, so it helps keep our skin hydrated, supple and smooth. If the collagen structure is strong, tightly bound and able to hold water, the skin appears healthy and taut. If it is weak, sparse and lacking water, the skin appears unhealthy and wrinkled.
Silicon: the lost nutrient
The link between silicon and collagen formation was first noted nearly four decades ago, but recently scientists have reported on its potential to dramatically enhance skin health and appearance. Often lost in food processing, most people have low silicon intake. Silicon levels also naturally decline as we age. Healthy babies have the highest silicon levels, which is why their skin is so smooth and supple. Without adequate silicon, the formation of collagen is stunted and skin health suffers.
Researchers have witnessed the power of silicon in the lab, where they found that enriching tissue samples with silicon increased collagen production by more than 200%. In a recent human trial, 50 women with signs of aging skin, thin hair and brittle nails took 10 ml of a liquid silica gel supplement orally, and also applied it topically to the face daily. Significant improvements were noted (and confirmed by ultrasound) in the thickness of skin, wrinkles and the health of hair and nails.
The vitamin C connection
Like silica, vitamin C is critical for collagen formation. Back in 1981, researchers exposed human connective tissue cells to vitamin C and reported an 8-fold increase in the synthesis of collagen! More recently in 2007, a study involving 4,025 women aged 40 to 74 years revealed that those with higher vitamin C intakes had a lower likelihood of a wrinkled appearance and skin dryness.
Humans cannot manufacture vitamin C, so we must get it from our diet or from supplements every day. Making collagen actually destroys vitamin C, so it must always be replenished.
Ensuring your body has what it needs to rebuild or maintain its vital collagen structure is the first and most important step towards healthy, supple and youthful-looking skin.
Sources: J Int Med Res, 1993 Jul-Aug;21(4):209-15; Encyclopedia of Nutritional Supplements by M Murray, ND, Prima: 1996; J Invest Dermatol. 2001 Nov;117(5):1218-24; Proc Natl Acad Sci USA. 1981 May;78(5):2879-82; Am J Clin Nutr, 2007;86(4):1225-31
Cod liver oil: help for painful joints
Taking cod liver oil to relieve arthritis and joint pain is a well known folk remedy, but one that may have some scientific merit, according to researchers from Ninewells Hospital and Medical School in Dundee, UK. They report that cod liver oil can help reduce the need for nonsteroidal anti-inflammatory (NSAID) medications in those with rheumatoid arthritis.
Pain scores and drug use dropped with cod liver oil.
In the study, 97 people taking NSAIDs were randomly assigned to receive either 10 grams (10 capsules) of a cod liver oil/fish oil blend or placebo capsules. The researchers found that after 9 months, 19 out of 49 people in the cod liver oil group were able to decrease their daily NSAID dose by more than 30%, compared with only 5 out 48 people in the placebo group. They also noted a significant improvement in pain scores in the cod liver oil group compared with the placebo group.
"Fish oil supplementation should be considered in rheumatoid arthritis patients to help them reduce their NSAID intake in order to attenuate the risks of gastrointestinal and cardiovascular adverse events associated with these drugs," said researcher Dr. Bernat Galarraga.
NSAIDs, commonly prescribed to arthritis sufferers, come with some concern about side effects such as gastrointestinal bleeding and cardiovascular events.
Cod liver oil contains essential fatty acids (EFAs) known to have anti-inflammatory properties. Previous studies suggest that supplementation with cod liver oil can help reduce inflammation and improve arthritis symptoms.
Source: Rheumatology 2008;447:665–9
Vitamin protects athletes: study
Strenuous exercise, while beneficial for overall fitness and health, can have a downside: lipid peroxidation. This refers to damage to cell membranes caused by free radicals generated during strenuous exercise. Researchers say that lipid peroxidation not only causes muscle soreness, but may also be linked to the progression of degenerative diseases (cardiovascular disease and cancer) and reduction in immune system function.
Hard exercise can have a downside...
Iranian researchers at Guilan University report that supplementation with 1,000 mg of vitamin C was found to prevent exercise-induced lipid peroxidation and muscle damage. Study subjects did 30 minutes of strenuous exercise either with or without prior vitamin C supplementation. Blood tests indicated that levels of a biomarker of free radical stress significantly increased 2 hours post-exercise only in the placebo group, and total antioxidant capacity decreased significantly after 24 hours again only among those in the placebo group, not among those in the vitamin C group.
According to the researchers, supplementation with vitamin C "prevented endurance exercise-induced lipid peroxidation and muscle damage."
Source: J Sports Med Phys Fitness, 2008; 48(2): 217-24
New hope for prostate cancer?
By causing a specific gene to increase a key enzyme, vitamin D protects healthy prostate cells from the damage and injuries that can lead to cancer, University of Rochester Medical Center researchers report.
"It can prevent prostate cancer from happening," said one researcher.
"Many epidemiological studies have suggested the beneficial properties of vitamin D," said Yi-Fen Lee, associate professor of urology. "Our findings reflect what we see in those studies and demonstrate that vitamin D not only can be used as a therapy for prostate cancer, it can prevent prostate cancer from happening."
Lee and her research team discovered one mechanism involving vitamin D that protects cells from oxidative stress. The vitamin D used in the study is D3, the most potent and active form of vitamin D in the human body.
Normal metabolism in cells generates free radicals. Exposure to some chemicals or forms of radiation can produce high levels of free radicals that can damage DNA and play a role in speeding aging or causing cancer.
Lee found that vitamin D increased activity of an enzyme that helps clear cells of free radicals, the molecules that can damage and injure cells.
"If you reduce DNA damage, you reduce the risk of cancer or aging," Lee said. "Our study adds one more beneficial effect of taking a vitamin D supplement. Taking a supplement is especially important for senior citizens and others who might have less circulation of vitamin D, and for people who live and work areas where there is less sunshine."
Source: University of Rochester Medical Center, May 13, 2008
Stressed and tired? Try green tea
According to Japanese researchers from Osaka City University Graduate School of Medicine, taking a supplement of the green tea compound EGCG may help offset the signs of physical and mental fatigue associated with a stressful lifestyle.
Compounds in green tea may help combat the effects of fatigue and stress.
In their animal model, taking the tea compound for five days reduced levels of oxidised species related to fatigue.
"Acute fatigue is a normal phenomenon that disappears after a period of rest. In contrast, the effects of accumulated fatigue are sometimes irreversible, and the compensation mechanisms that are useful in reducing acute fatigue are no longer effective," said lead author Masaaki Tanaka.
Green tea and its extracts have been growing in popularity among consumers and researchers alike, as studies show protective effects against Alzheimer's and certain cancers, as well as improvements in heart and oral. Other research points to a positive role in weight management.
Tanaka and co-researchers found that rats subjected to stress, who were also given EGCG from green tea, performed better on tests of fatigue than those not given the extract. They also found lower levels of stress markers in those given ECGC.
"We demonstrated that oral administration of EGCG...improved performance in an animal model of combined fatigue; this effect may be mediated by its antioxidant properties in the liver," they concluded.
Source: Nutrition. 2008 Jun;24(6):599-603
Strict diet helps arthritis patients
A gluten-free vegan diet may improve the health of patients with rheumatoid arthritis, according to new research from the Swedish medical universit Karolinska Institutet. The diet also has a beneficial effect on several risk factors for cardiovascular disease.
Rheumatoid arthritis is associated with an increased risk of atherosclerosis (hardening of the arteries) and cardiovascular diseases.
The protective effect was seen when a group of patients who kept to a gluten-free vegan diet for a year were compared with a control group which had followed ordinary dietary advice.
Vegan food had a positive effect on symptoms of the disease, which were more pronounced in the control group. Blood levels of oxidised LDL-cholesterol, a risk factor for atherosclerosis, were also lower in the group which kept to the vegan diet.
"Our findings suggest a new mechanism by which the level of natural protective antibodies can be increased. They also show that diet can have effects on the immune system with implications for the incidence of disease," says Professor Johan Frostegård, who led the study.
Source: Karolinska Institutet, Mar 18, 2008
Collagen for joint pain
A study presented at the Osteoarthritis Research Society International Congress showed that collagen hydrolysate reduced joint symptoms brought about by mechanical stress. Researchers noted participants taking collagen had significant improvements in knee pain within 24 weeks, compared to counterparts taking a placebo. The participants suffered joint symptoms caused by sporting activity, stress conditions, injury, post-surgical trauma, limited mobility and inflammation.
Source: Dietary Supplement Information Bureau, Jan 31, 2008
In a recent study on the iron status of teenage girls in Sweden, 85% were taking in less than the recommended dietary amount.
Cranberry
What is it? North American berry from the same plant family as bilberry and blueberry.
Why use it? To reduce or prevent the occurrence of urinary tract infection (UTI).
What's the research?A 2007 review concluded that "cranberry fruits are effective not only in the prevention of urinary tract infection [due to inhibiting the adherence of bacteria to the bladder wall] but also for the prevention of oxidative stress." A 2008 review of research determined that cranberry was safe and effective for use during pregnancy.
Sun protection from spaghetti?
Lycopene, a compound found in tomatoes and tomato products, may protect against sunburn and sun-induced skin ageing, say British researchers. They found that people who consumed tomato paste had 33% more protection against sunburn than those in a control group. Co-researcher Professor Lesley Rhodes said: "The tomato diet boosted the level of procollagen in the skin significantly. These increasing levels suggest potential reversal of the skin ageing process. This is in addition to the significant reduction in sunburn.
Source: British Society for Investigative Dermatology Annual Meeting, Apr 8, 2008
Men's diet affects fertility
Spanish researchers at the Department of Reproductive Biology, Instituto Bernabeu, report that lower intakes of lettuce, tomatoes, apricots and peaches, and significantly higher intakes of dairy and meat products are associated with poor semen quality. Thus, the authors of this study conclude, "Frequent intake of lipophilic foods like meat products or milk may negatively affect semen quality in humans, whereas some fruits or vegetables may maintain or improve semen quality."
Source: Fertil Steril, Mar 7, 2008
Most men lack vitamin D
Belgian researchers who looked at 291 elderly men aged 65 years or older found that severe vitamin D deficiency was quite prevalent. They found severe deficiency in 57% of community-dwelling men, and 79% of institutionalized men. Mild and moderate vitamin D deficiency was found in 21% of institutionalized and 42% of community-dwelling men. Astoundingly, of all the men studied, only two had normal levels of vitamin D. The authors conclude, "Vitamin D supplementation should be routinely prescribed in institutions for the elderly and probably also to any individual over 65 years."
Source: Presse Med, 2008; 37(2):1,191-200
Green tea and sleep apnea
Compounds found in green tea may be able to stave off the cognitive deficits that occur with obstructive sleep apnea (OSA), according to a new study. In an animal model, rats given green tea extract performed significantly better on tests measuring brain and spatial skills after intermittent oxygen depletion. The authors say that green tea compounds "may represent a potential interventional strategy for patients" with sleep-disordered breathing.
Source: American Thoracic Society, May 15, 2008
Drug culture?
More than half of all insured Americans are taking prescription drugs for chronic health problems, according to a new study. Medication use for chronic problems was seen in all demographic groups:
· Almost two-thirds of women 20 and older.
· One in four children and teenagers.
· 52% of adult men.
· Three out of four people 65 or older.
· Among seniors, 28% of women and nearly 22% of men take five or more medicines regularly.
Source: AFX News Ltd, May 14, 2008
To promote bowel regularity, take 1 tablespoon (15 ml) of whole or ground flaxseed once or twice per day, accompanied by a full glass of water.
These articles are based upon current scientific studies and professional opinions; however, they are not to be regarded or relied upon as medical advice for self-diagnosis or treatment of any condition or disease.
Copyright 2008 Health News Update
June 2008
Feature
How to revitalize dry, wrinkled skin
Updates
Cod liver oil: help for painful joints
Vitamin protects athletes: study
New hope for prostate cancer?
Stressed and tired? Try green tea
Strict diet helps arthritis patients
Briefs
Collagen for joint pain
Sun protection from spaghetti?
Men's diet affects fertility
Most men lack vitamin D
Green tea and sleep apnea
Drug culture?
How to revitalize dry, wrinkled skin
Are you hoping to maintain or recapture supple, youthful-looking skin and decrease wrinkles and dryness? While some topical treatments may offer benefits, addressing skin health from the outside can only go so far. For real, lasting and noticeable change to occur in our skin, research reveals we require two critical nutrients proven to stimulate collagen formation and improve skin hydration.
While topical treatments may help, feeding the skin's collagen structure can provide lasting, noticeable results.
What's happening?
Moisture loss in the skin begins as early as our 20s, and UV exposure only speeds this dehydration. It is increased again when estrogen levels start to decline during perimenopause and menopause. Skin dehydration is associated with scaly, taut skin, superficial lines and wrinkles, and premature aging.
Collagen, the protein at the base of our skin structure, binds with water, so it helps keep our skin hydrated, supple and smooth. If the collagen structure is strong, tightly bound and able to hold water, the skin appears healthy and taut. If it is weak, sparse and lacking water, the skin appears unhealthy and wrinkled.
Silicon: the lost nutrient
The link between silicon and collagen formation was first noted nearly four decades ago, but recently scientists have reported on its potential to dramatically enhance skin health and appearance. Often lost in food processing, most people have low silicon intake. Silicon levels also naturally decline as we age. Healthy babies have the highest silicon levels, which is why their skin is so smooth and supple. Without adequate silicon, the formation of collagen is stunted and skin health suffers.
Researchers have witnessed the power of silicon in the lab, where they found that enriching tissue samples with silicon increased collagen production by more than 200%. In a recent human trial, 50 women with signs of aging skin, thin hair and brittle nails took 10 ml of a liquid silica gel supplement orally, and also applied it topically to the face daily. Significant improvements were noted (and confirmed by ultrasound) in the thickness of skin, wrinkles and the health of hair and nails.
The vitamin C connection
Like silica, vitamin C is critical for collagen formation. Back in 1981, researchers exposed human connective tissue cells to vitamin C and reported an 8-fold increase in the synthesis of collagen! More recently in 2007, a study involving 4,025 women aged 40 to 74 years revealed that those with higher vitamin C intakes had a lower likelihood of a wrinkled appearance and skin dryness.
Humans cannot manufacture vitamin C, so we must get it from our diet or from supplements every day. Making collagen actually destroys vitamin C, so it must always be replenished.
Ensuring your body has what it needs to rebuild or maintain its vital collagen structure is the first and most important step towards healthy, supple and youthful-looking skin.
Sources: J Int Med Res, 1993 Jul-Aug;21(4):209-15; Encyclopedia of Nutritional Supplements by M Murray, ND, Prima: 1996; J Invest Dermatol. 2001 Nov;117(5):1218-24; Proc Natl Acad Sci USA. 1981 May;78(5):2879-82; Am J Clin Nutr, 2007;86(4):1225-31
Cod liver oil: help for painful joints
Taking cod liver oil to relieve arthritis and joint pain is a well known folk remedy, but one that may have some scientific merit, according to researchers from Ninewells Hospital and Medical School in Dundee, UK. They report that cod liver oil can help reduce the need for nonsteroidal anti-inflammatory (NSAID) medications in those with rheumatoid arthritis.
Pain scores and drug use dropped with cod liver oil.
In the study, 97 people taking NSAIDs were randomly assigned to receive either 10 grams (10 capsules) of a cod liver oil/fish oil blend or placebo capsules. The researchers found that after 9 months, 19 out of 49 people in the cod liver oil group were able to decrease their daily NSAID dose by more than 30%, compared with only 5 out 48 people in the placebo group. They also noted a significant improvement in pain scores in the cod liver oil group compared with the placebo group.
"Fish oil supplementation should be considered in rheumatoid arthritis patients to help them reduce their NSAID intake in order to attenuate the risks of gastrointestinal and cardiovascular adverse events associated with these drugs," said researcher Dr. Bernat Galarraga.
NSAIDs, commonly prescribed to arthritis sufferers, come with some concern about side effects such as gastrointestinal bleeding and cardiovascular events.
Cod liver oil contains essential fatty acids (EFAs) known to have anti-inflammatory properties. Previous studies suggest that supplementation with cod liver oil can help reduce inflammation and improve arthritis symptoms.
Source: Rheumatology 2008;447:665–9
Vitamin protects athletes: study
Strenuous exercise, while beneficial for overall fitness and health, can have a downside: lipid peroxidation. This refers to damage to cell membranes caused by free radicals generated during strenuous exercise. Researchers say that lipid peroxidation not only causes muscle soreness, but may also be linked to the progression of degenerative diseases (cardiovascular disease and cancer) and reduction in immune system function.
Hard exercise can have a downside...
Iranian researchers at Guilan University report that supplementation with 1,000 mg of vitamin C was found to prevent exercise-induced lipid peroxidation and muscle damage. Study subjects did 30 minutes of strenuous exercise either with or without prior vitamin C supplementation. Blood tests indicated that levels of a biomarker of free radical stress significantly increased 2 hours post-exercise only in the placebo group, and total antioxidant capacity decreased significantly after 24 hours again only among those in the placebo group, not among those in the vitamin C group.
According to the researchers, supplementation with vitamin C "prevented endurance exercise-induced lipid peroxidation and muscle damage."
Source: J Sports Med Phys Fitness, 2008; 48(2): 217-24
New hope for prostate cancer?
By causing a specific gene to increase a key enzyme, vitamin D protects healthy prostate cells from the damage and injuries that can lead to cancer, University of Rochester Medical Center researchers report.
"It can prevent prostate cancer from happening," said one researcher.
"Many epidemiological studies have suggested the beneficial properties of vitamin D," said Yi-Fen Lee, associate professor of urology. "Our findings reflect what we see in those studies and demonstrate that vitamin D not only can be used as a therapy for prostate cancer, it can prevent prostate cancer from happening."
Lee and her research team discovered one mechanism involving vitamin D that protects cells from oxidative stress. The vitamin D used in the study is D3, the most potent and active form of vitamin D in the human body.
Normal metabolism in cells generates free radicals. Exposure to some chemicals or forms of radiation can produce high levels of free radicals that can damage DNA and play a role in speeding aging or causing cancer.
Lee found that vitamin D increased activity of an enzyme that helps clear cells of free radicals, the molecules that can damage and injure cells.
"If you reduce DNA damage, you reduce the risk of cancer or aging," Lee said. "Our study adds one more beneficial effect of taking a vitamin D supplement. Taking a supplement is especially important for senior citizens and others who might have less circulation of vitamin D, and for people who live and work areas where there is less sunshine."
Source: University of Rochester Medical Center, May 13, 2008
Stressed and tired? Try green tea
According to Japanese researchers from Osaka City University Graduate School of Medicine, taking a supplement of the green tea compound EGCG may help offset the signs of physical and mental fatigue associated with a stressful lifestyle.
Compounds in green tea may help combat the effects of fatigue and stress.
In their animal model, taking the tea compound for five days reduced levels of oxidised species related to fatigue.
"Acute fatigue is a normal phenomenon that disappears after a period of rest. In contrast, the effects of accumulated fatigue are sometimes irreversible, and the compensation mechanisms that are useful in reducing acute fatigue are no longer effective," said lead author Masaaki Tanaka.
Green tea and its extracts have been growing in popularity among consumers and researchers alike, as studies show protective effects against Alzheimer's and certain cancers, as well as improvements in heart and oral. Other research points to a positive role in weight management.
Tanaka and co-researchers found that rats subjected to stress, who were also given EGCG from green tea, performed better on tests of fatigue than those not given the extract. They also found lower levels of stress markers in those given ECGC.
"We demonstrated that oral administration of EGCG...improved performance in an animal model of combined fatigue; this effect may be mediated by its antioxidant properties in the liver," they concluded.
Source: Nutrition. 2008 Jun;24(6):599-603
Strict diet helps arthritis patients
A gluten-free vegan diet may improve the health of patients with rheumatoid arthritis, according to new research from the Swedish medical universit Karolinska Institutet. The diet also has a beneficial effect on several risk factors for cardiovascular disease.
Rheumatoid arthritis is associated with an increased risk of atherosclerosis (hardening of the arteries) and cardiovascular diseases.
The protective effect was seen when a group of patients who kept to a gluten-free vegan diet for a year were compared with a control group which had followed ordinary dietary advice.
Vegan food had a positive effect on symptoms of the disease, which were more pronounced in the control group. Blood levels of oxidised LDL-cholesterol, a risk factor for atherosclerosis, were also lower in the group which kept to the vegan diet.
"Our findings suggest a new mechanism by which the level of natural protective antibodies can be increased. They also show that diet can have effects on the immune system with implications for the incidence of disease," says Professor Johan Frostegård, who led the study.
Source: Karolinska Institutet, Mar 18, 2008
Collagen for joint pain
A study presented at the Osteoarthritis Research Society International Congress showed that collagen hydrolysate reduced joint symptoms brought about by mechanical stress. Researchers noted participants taking collagen had significant improvements in knee pain within 24 weeks, compared to counterparts taking a placebo. The participants suffered joint symptoms caused by sporting activity, stress conditions, injury, post-surgical trauma, limited mobility and inflammation.
Source: Dietary Supplement Information Bureau, Jan 31, 2008
In a recent study on the iron status of teenage girls in Sweden, 85% were taking in less than the recommended dietary amount.
Cranberry
What is it? North American berry from the same plant family as bilberry and blueberry.
Why use it? To reduce or prevent the occurrence of urinary tract infection (UTI).
What's the research?A 2007 review concluded that "cranberry fruits are effective not only in the prevention of urinary tract infection [due to inhibiting the adherence of bacteria to the bladder wall] but also for the prevention of oxidative stress." A 2008 review of research determined that cranberry was safe and effective for use during pregnancy.
Sun protection from spaghetti?
Lycopene, a compound found in tomatoes and tomato products, may protect against sunburn and sun-induced skin ageing, say British researchers. They found that people who consumed tomato paste had 33% more protection against sunburn than those in a control group. Co-researcher Professor Lesley Rhodes said: "The tomato diet boosted the level of procollagen in the skin significantly. These increasing levels suggest potential reversal of the skin ageing process. This is in addition to the significant reduction in sunburn.
Source: British Society for Investigative Dermatology Annual Meeting, Apr 8, 2008
Men's diet affects fertility
Spanish researchers at the Department of Reproductive Biology, Instituto Bernabeu, report that lower intakes of lettuce, tomatoes, apricots and peaches, and significantly higher intakes of dairy and meat products are associated with poor semen quality. Thus, the authors of this study conclude, "Frequent intake of lipophilic foods like meat products or milk may negatively affect semen quality in humans, whereas some fruits or vegetables may maintain or improve semen quality."
Source: Fertil Steril, Mar 7, 2008
Most men lack vitamin D
Belgian researchers who looked at 291 elderly men aged 65 years or older found that severe vitamin D deficiency was quite prevalent. They found severe deficiency in 57% of community-dwelling men, and 79% of institutionalized men. Mild and moderate vitamin D deficiency was found in 21% of institutionalized and 42% of community-dwelling men. Astoundingly, of all the men studied, only two had normal levels of vitamin D. The authors conclude, "Vitamin D supplementation should be routinely prescribed in institutions for the elderly and probably also to any individual over 65 years."
Source: Presse Med, 2008; 37(2):1,191-200
Green tea and sleep apnea
Compounds found in green tea may be able to stave off the cognitive deficits that occur with obstructive sleep apnea (OSA), according to a new study. In an animal model, rats given green tea extract performed significantly better on tests measuring brain and spatial skills after intermittent oxygen depletion. The authors say that green tea compounds "may represent a potential interventional strategy for patients" with sleep-disordered breathing.
Source: American Thoracic Society, May 15, 2008
Drug culture?
More than half of all insured Americans are taking prescription drugs for chronic health problems, according to a new study. Medication use for chronic problems was seen in all demographic groups:
· Almost two-thirds of women 20 and older.
· One in four children and teenagers.
· 52% of adult men.
· Three out of four people 65 or older.
· Among seniors, 28% of women and nearly 22% of men take five or more medicines regularly.
Source: AFX News Ltd, May 14, 2008
To promote bowel regularity, take 1 tablespoon (15 ml) of whole or ground flaxseed once or twice per day, accompanied by a full glass of water.
These articles are based upon current scientific studies and professional opinions; however, they are not to be regarded or relied upon as medical advice for self-diagnosis or treatment of any condition or disease.
Copyright 2008 Health News Update
Friday, May 9, 2008
Natural Health News Update - May 2008
Feature
Natural remedies vs. the superbugs!
Updates
Folic acid: not just for women
Combination eases blood pressure
Minerals may help with low thyroid
Vitamin E: benefits for the elderly
Berries may reverse memory loss
Briefs
Depression and pregnancy
Vitamin slashes cancer risk
More help for blood pressure
Multi helps with infertility
Omega-3 for less dementia
Resveratrol targets cancer
Natural remedies vs. the superbugs!
The fight against antibiotic-resistant bacteria (so called "superbugs") is increasingly in our minds as reports of hospital-based infections flood the media. What's not often reported, however, is research showing that a few natural remedies have shown promise.
A compound in garlic, called allicin, "blows holes through MRSA," says one researcher.
One of the major superbugs is MRSA (methicillin-resistant Staphylococcus aureus), which occurs most frequently among patients who undergo invasive medical procedures or who have weakened immune systems. Hospitals, nursing homes and dialysis centers are the major transmission sites. MRSA can cause serious and even life-threatening infections, such as bloodstream infections, surgical site infections or pneumonia. MRSA can also infect otherwise healthy people in the community, typically as a skin infection.
Tea treatment?
Egyptian scientists have recently shown that drinking green tea helps vital antibiotics in their fight against resistant superbugs, making them up to three times more effective. While testing 28 disease-causing bacteria to see if green tea would have any negative interaction with antibiotics, they found the quite the opposite.
"In every single case green tea enhanced the bacteria-killing activity of the antibiotics," says Dr Mervat Kassem from Alexandria University.
Green tea also made 20% of drug-resistant bacteria susceptible to one of the cephalosporin antibiotics. These are important antibiotics that new drug resistant strains of bacteria have evolved to resist.
"Our results show that we should consider more seriously the natural products we consume in our everyday life," says Dr Kassem.
Sweet but strong!
Another such "everyday" natural product is honey. For several years now medical experts from the University of Bonn have been clocking up largely positive experience with what is known as medihoney. Even chronic wounds infected with multi-resistant bacteria are often healed within a few weeks. It has already been proved that medihoney is effective against multi-resistant germs such as MRSA. So far, trials suggest the superbug does not develop resistance to the natural product. In a recent study, Irish scientists reported that honey was able to reduce the MRSA cultures to a non-detectable level within only 24 hours. One type of honey, known as Manuka, appears to be particularly affective against a broad range of bacteria.
More against MRSA
Other common remedies showing promise against MRSA include garlic and tea tree oil. A compound in garlic called allicin is extremely effective in this regard, according to Ronald Cutler, a UK lecturer in microbiology at the University of East London.
"Allicin simply blows enormous holes through MRSA," says Cutler, who has formulated allicin into skin products such as creams and soaps and has achieved success in destroying the microbes in laboratory tests.
In another small experiment, a tea tree oil nasal ointment and a body wash were compared to similar standard antibiotic treatments against MRSA. The researchers concluded that "the tea tree oil combination appeared to perform better than the standard combination," although larger trials are necessary to establish effectiveness and treatment protocols.
Sources: Society for General Microbiology, Mar 30, 2008; University of Bonn, July 27, 2006; Complement Ther Clin Pract. 2008 May;14(2):77-82. Epub 2008; J Hosp Infect. 2000 Nov;46(3):236-7
Folic acid: not just for women
Woman of childbearing age are commonly advised to consume folate in order to help prevent birth defects, should they conceive. Now it appears that men's folate intake also affects reproductive health.
Low levels were linked with abnormal sperm.
In addition, folate (a nutrient also known as folic acid) has recently been shown to blunt the damaging effects of heart attack when given in short-term, high doses to test animals.
California researchers examined the sperm of men who consume less folate in their diets and found that healthy men who report lower levels of folate consumption have higher rates of chromosomal abnormalities in their sperm.
"Recent studies have suggested that paternal diet affects sperm count and motility, which is important for conception, but this new study takes it further to say that male diet may be important for healthy offspring as well," study coordinator Susanne Young says.
A separate study conducted by an international team of heart experts reports that rats fed 10 mg per day of folate for one week prior to heart attack had smaller attacks than rats that took no supplements.
The amount of muscle tissue exposed to damage and scarred by arterial blockage was reduced, on average, to less than a 10th.
"We want to emphasize that it is premature for people to begin taking high doses of folic acid," study investigator Dr. David Kass says.
"But if human studies prove equally effective, then high-dose folate could be given to high-risk groups to guard against possible heart attack or to people while they are having one."
Sources: University of California, Berkeley, Mar 19, 2008; John Hopkins Medicine, Mar 27, 2008
Combination eases blood pressure
Taking garlic and vitamin C may bring marginally high blood pressure back to normal, new research shows.
While the incidence of uncontrolled high blood pressure has declined in men, it has increased among women.
A pilot study from Albany, New York involved six people with marginally elevated blood pressure. The individuals underwent four 10-day interventions with one-week breaks in between. First they received a placebo, next 2,000 mg per day of vitamin C, then 650 mg per day of garlic tablets containing bulb powder, and finally vitamin C and garlic tablets in combination.
Vitamin C alone did not affect blood pressure. Garlic alone significantly lowered mean systolic but not diastolic blood pressure. But garlic taken in combination with vitamin C reduced mean systolic and diastolic blood pressure.
"The effect of garlic ingredients or garlic ingredients and antioxidants on endothelial cell nitric oxide production might explain the effects of garlic and vitamin C in lowering marginally high blood pressure," the researchers concluded.
Endothelial cells are thin cells that line the inside surfaces of blood and lymph vessels.
Source: Nutr Res, 2007; 27(2): 119-123
Minerals may help with low thyroid
If your thyroid is low, consider talking to your doctor about a zinc and iron connection. Taking zinc supplements can help improve thyroid function; and conversely, iron deficiency impairs thyroid metabolism, research indicates.
There appears to be a link between low iron levels and low thyroid hormone.
A recent case study explored the role of zinc by giving each of two physically active college women about 25 mg per day of zinc.
After four months, the women were no longer zinc-deficient. As well, zinc supplementation appeared to have a favourable effect on thyroid hormone levels, especially total T3; and resting metabolic rate, the researchers found. T3, the most powerful thyroid hormone, affects almost every process in the body, including body temperature, growth, and heart rate.
An unrelated Iranian study examined thyroid status in relation to low iron levels, building on extensive human and animal data indicating that iron deficiency impairs thyroid metabolism. Having collected urine and blood samples from about 100 iron-deficient adolescent girls, researchers found a significant correlation between T4 and ferritin, and between TSH and ferritin.
T4 is a thyroid hormone that helps regulate growth and control the metabolic rate, or rate of chemical reactions in the body. TSH, a hormone produced by the pituitary gland, stimulates the thyroid gland to produce more thyroid hormones. Ferritin is an iron-carrying protein considered to be a more accurate measure of long term body iron status than the blood iron level, which varies with diet.
The study's total findings indicate that the degree of iron deficiency may affect thyroid hormone status in iron-deficient adolescent girls.
Sources: Ann Nutr Metab. 2007;51(2):188-94 Epub 2007 May 30; Asia Pac J Clin Nutr. 2006;15(1):50-5
Vitamin E: benefits for the elderly
Taking vitamin E can improve immunity in the elderly, new research suggests. As well, higher vitamin E levels in the blood may help protect elderly people against cognitive impairment and dementia.
Those taking vitamin E supplements experienced improved immune function.
Spanish researchers studied otherwise healthy elderly men and women whose immune functions were impaired compared to a control group. However, taking 200 mg (about 300 IU) of vitamin E for three months significantly improved immune functions among members of the group, bringing their levels close to those of the controls.
These findings "suggest that supplementation with vitamin E can produce an improvement of immune functions and therefore of health in aged people," researchers concluded.
Earlier research conducted in Italy points to the possible role of vitamin E in protecting against cognitive impairment and dementia.
In this study, about 1,000 people age 65 and up received clinical and neuropsychological examinations, donated blood for vitamin E analysis and had their diets assessed.
Participants with the lowest blood levels of vitamin E had a significantly higher probability of being demented and of suffering from cognitive impairment, compared to those with the highest vitamin E levels.
Before conducting the study, researchers were faced with conflicting evidence that antioxidants contribute to the maintenance of cognitive function. However, the findings of this study led them to conclude that the antioxidant vitamin E does appear to serve in this capacity.
Sources: Free Radic Res. 2008 Mar;42(3):272-80; Neurobiol Aging. 2005 Jul;26(7):987-94. Epub 2004 Nov 5
Berries may reverse memory loss
If you're getting forgetful as you get older, then a research team at Peninsula Medical School in the Southwest of England may have good news for you.
They have found that phytochemical-rich foods, such as blueberries, are effective at reversing age-related deficits in memory, according to a study soon to be published. The researchers supplemented a regular diet with blueberries over a 12-week period, and found that improvements in spatial working memory tasks emerged within three weeks and continued throughout the period of the study.
Blueberries are a major source of flavonoids, in particular anthocyanins and flavanols. Although the precise ways in which these molecules affect the brain are unknown, they have been shown to cross the blood brain barrier after dietary intake. It is believed that they exert their effects on learning and memory by enhancing existing neuronal (brain cell) connections, improving cellular communications and stimulating neuronal regeneration.
Source: The Peninsula College of Medicine and Dentistry , Apr 10, 2008
Depression and pregnancy
Chinese researchers report that omega-3s may offer an alternative to antidepressant medications during pregnancy. The double-blind, placebo-controlled study involved 24 pregnant women with major depressive disorder. From one month prior to starting the study, no medications were used by the patients, who were then randomized to receive 3.4 g/d of omega-3 or placebo for 8 weeks. By six and eight weeks, those in the omega-3 group had significantly lower scores for depressive symptoms on three common rating scales, compared with women taking placebo. The authors conclude that "Omega-3...may have therapeutic benefits in depression during pregnancy" and recommend further study.
Source: Clin Psychiatry, 2008, Mar 18; [Epub ahead of print]
Vitamin slashes cancer risk
Getting more vitamin K2 may reduce the risk of prostate cancer by 35%, according to results from the European Prospective Investigation into Cancer and Nutrition (EPIC). The German researchers noted that the potential benefits of K2 were more pronounced for cases of advanced prostate cancer. The study adds to a growing awareness of the potential health benefits of vitamin K2, most notable for bone and blood health, but also recently linked to improved skin health.
There are two main forms of vitamin K: phylloquinone (vitamin K1) and menaquinones (vitamin K2). The protective effect in this study was only noted with the K2 type.
Source: American Journal of Clinical Nutrition, Apr 2008
Hyaluronic acid
What is it? A lubricating and protective substance found in the fluid of joints.
Why use it? To reduce pain and improve symptoms of arthritis; to help heal wounds.
What's the research?Studies show that the HA content in osteoarthritic cartilage is reduced and that supplementation eases pain and improves joint function. Lab studies show that HA can stimulate chondrocyte metabolism, the process responsible for joint cartilage production and maintenance.
More help for blood pressure
According to UK Researchers at the Imperial College London, getting higher dietary levels of phosphorous, calcium and magnesium can help prevent or control high blood pressure. Their study involved 4,680 men and women from Japan, China, United Kingdom and Unites States, and used blood pressure measurements and food diaries.
Source: Hypertension, 2008; 51(3): 669-75
Multi helps with infertility
US researchers from the Department of Nutrition at the Harvard School of Public Health report that taking a daily multivitamin tablet can reduce the risk of ovulatory infertility (not developing and releasing a mature egg every month). Their 8-year study involved 18,555 married, premenopausal women without a history of infertility. They found that women taking two or less multivitamin tablets per week had a 12% reduced risk of ovulatory infertility; women taking three to five multivitamin tablets per weeks had a 31% reduced risk; and women taking six or more multivitamin tablets per week had a 41% reduced risk, compared to women who did not use multivitamin supplements. The risk reduction was partly explained by folic acid, say the researchers.
Source: Fertil Steril, 2008; 89(3): 668-76
Omega-3 for less dementia
Researchers from Italy report that, compared to subjects with normal cognitive function, those with dementia were found to have lower omega-3 fatty acid levels, particularly alpha-linolenic acid levels.
Source: J Gerontol A Biol Sci Med Sci, 2007; 62(10): 1120-6.
Resveratrol targets cancer
University of Rochester researchers showed for the first time that a natural antioxidant found in grape skins and red wine can help destroy pancreatic cancer cells by reaching to the cell's core energy source, or mitochondria, and crippling its function. The study also showed that when the pancreatic cancer cells were doubly assaulted (pre-treated with the antioxidant, resveratrol, and irradiated) the combination induced a type of cell death called apoptosis, an important goal of cancer therapy. It appears that resveratrol not only reaches its intended target, injuring the nexus of malignant cells, but also protects normal tissue from the harmful effects of radiation. While additional studies are needed, research indicates that resveratrol has a promising future
Source: University of Rochester Medical Center, Mar 25, 2008
These articles are based upon current scientific studies and professional opinions; however, they are not to be regarded or relied upon as medical advice for self-diagnosis or treatment of any condition or disease.
Copyright 2008 Health News Update
Natural remedies vs. the superbugs!
Updates
Folic acid: not just for women
Combination eases blood pressure
Minerals may help with low thyroid
Vitamin E: benefits for the elderly
Berries may reverse memory loss
Briefs
Depression and pregnancy
Vitamin slashes cancer risk
More help for blood pressure
Multi helps with infertility
Omega-3 for less dementia
Resveratrol targets cancer
Natural remedies vs. the superbugs!
The fight against antibiotic-resistant bacteria (so called "superbugs") is increasingly in our minds as reports of hospital-based infections flood the media. What's not often reported, however, is research showing that a few natural remedies have shown promise.
A compound in garlic, called allicin, "blows holes through MRSA," says one researcher.
One of the major superbugs is MRSA (methicillin-resistant Staphylococcus aureus), which occurs most frequently among patients who undergo invasive medical procedures or who have weakened immune systems. Hospitals, nursing homes and dialysis centers are the major transmission sites. MRSA can cause serious and even life-threatening infections, such as bloodstream infections, surgical site infections or pneumonia. MRSA can also infect otherwise healthy people in the community, typically as a skin infection.
Tea treatment?
Egyptian scientists have recently shown that drinking green tea helps vital antibiotics in their fight against resistant superbugs, making them up to three times more effective. While testing 28 disease-causing bacteria to see if green tea would have any negative interaction with antibiotics, they found the quite the opposite.
"In every single case green tea enhanced the bacteria-killing activity of the antibiotics," says Dr Mervat Kassem from Alexandria University.
Green tea also made 20% of drug-resistant bacteria susceptible to one of the cephalosporin antibiotics. These are important antibiotics that new drug resistant strains of bacteria have evolved to resist.
"Our results show that we should consider more seriously the natural products we consume in our everyday life," says Dr Kassem.
Sweet but strong!
Another such "everyday" natural product is honey. For several years now medical experts from the University of Bonn have been clocking up largely positive experience with what is known as medihoney. Even chronic wounds infected with multi-resistant bacteria are often healed within a few weeks. It has already been proved that medihoney is effective against multi-resistant germs such as MRSA. So far, trials suggest the superbug does not develop resistance to the natural product. In a recent study, Irish scientists reported that honey was able to reduce the MRSA cultures to a non-detectable level within only 24 hours. One type of honey, known as Manuka, appears to be particularly affective against a broad range of bacteria.
More against MRSA
Other common remedies showing promise against MRSA include garlic and tea tree oil. A compound in garlic called allicin is extremely effective in this regard, according to Ronald Cutler, a UK lecturer in microbiology at the University of East London.
"Allicin simply blows enormous holes through MRSA," says Cutler, who has formulated allicin into skin products such as creams and soaps and has achieved success in destroying the microbes in laboratory tests.
In another small experiment, a tea tree oil nasal ointment and a body wash were compared to similar standard antibiotic treatments against MRSA. The researchers concluded that "the tea tree oil combination appeared to perform better than the standard combination," although larger trials are necessary to establish effectiveness and treatment protocols.
Sources: Society for General Microbiology, Mar 30, 2008; University of Bonn, July 27, 2006; Complement Ther Clin Pract. 2008 May;14(2):77-82. Epub 2008; J Hosp Infect. 2000 Nov;46(3):236-7
Folic acid: not just for women
Woman of childbearing age are commonly advised to consume folate in order to help prevent birth defects, should they conceive. Now it appears that men's folate intake also affects reproductive health.
Low levels were linked with abnormal sperm.
In addition, folate (a nutrient also known as folic acid) has recently been shown to blunt the damaging effects of heart attack when given in short-term, high doses to test animals.
California researchers examined the sperm of men who consume less folate in their diets and found that healthy men who report lower levels of folate consumption have higher rates of chromosomal abnormalities in their sperm.
"Recent studies have suggested that paternal diet affects sperm count and motility, which is important for conception, but this new study takes it further to say that male diet may be important for healthy offspring as well," study coordinator Susanne Young says.
A separate study conducted by an international team of heart experts reports that rats fed 10 mg per day of folate for one week prior to heart attack had smaller attacks than rats that took no supplements.
The amount of muscle tissue exposed to damage and scarred by arterial blockage was reduced, on average, to less than a 10th.
"We want to emphasize that it is premature for people to begin taking high doses of folic acid," study investigator Dr. David Kass says.
"But if human studies prove equally effective, then high-dose folate could be given to high-risk groups to guard against possible heart attack or to people while they are having one."
Sources: University of California, Berkeley, Mar 19, 2008; John Hopkins Medicine, Mar 27, 2008
Combination eases blood pressure
Taking garlic and vitamin C may bring marginally high blood pressure back to normal, new research shows.
While the incidence of uncontrolled high blood pressure has declined in men, it has increased among women.
A pilot study from Albany, New York involved six people with marginally elevated blood pressure. The individuals underwent four 10-day interventions with one-week breaks in between. First they received a placebo, next 2,000 mg per day of vitamin C, then 650 mg per day of garlic tablets containing bulb powder, and finally vitamin C and garlic tablets in combination.
Vitamin C alone did not affect blood pressure. Garlic alone significantly lowered mean systolic but not diastolic blood pressure. But garlic taken in combination with vitamin C reduced mean systolic and diastolic blood pressure.
"The effect of garlic ingredients or garlic ingredients and antioxidants on endothelial cell nitric oxide production might explain the effects of garlic and vitamin C in lowering marginally high blood pressure," the researchers concluded.
Endothelial cells are thin cells that line the inside surfaces of blood and lymph vessels.
Source: Nutr Res, 2007; 27(2): 119-123
Minerals may help with low thyroid
If your thyroid is low, consider talking to your doctor about a zinc and iron connection. Taking zinc supplements can help improve thyroid function; and conversely, iron deficiency impairs thyroid metabolism, research indicates.
There appears to be a link between low iron levels and low thyroid hormone.
A recent case study explored the role of zinc by giving each of two physically active college women about 25 mg per day of zinc.
After four months, the women were no longer zinc-deficient. As well, zinc supplementation appeared to have a favourable effect on thyroid hormone levels, especially total T3; and resting metabolic rate, the researchers found. T3, the most powerful thyroid hormone, affects almost every process in the body, including body temperature, growth, and heart rate.
An unrelated Iranian study examined thyroid status in relation to low iron levels, building on extensive human and animal data indicating that iron deficiency impairs thyroid metabolism. Having collected urine and blood samples from about 100 iron-deficient adolescent girls, researchers found a significant correlation between T4 and ferritin, and between TSH and ferritin.
T4 is a thyroid hormone that helps regulate growth and control the metabolic rate, or rate of chemical reactions in the body. TSH, a hormone produced by the pituitary gland, stimulates the thyroid gland to produce more thyroid hormones. Ferritin is an iron-carrying protein considered to be a more accurate measure of long term body iron status than the blood iron level, which varies with diet.
The study's total findings indicate that the degree of iron deficiency may affect thyroid hormone status in iron-deficient adolescent girls.
Sources: Ann Nutr Metab. 2007;51(2):188-94 Epub 2007 May 30; Asia Pac J Clin Nutr. 2006;15(1):50-5
Vitamin E: benefits for the elderly
Taking vitamin E can improve immunity in the elderly, new research suggests. As well, higher vitamin E levels in the blood may help protect elderly people against cognitive impairment and dementia.
Those taking vitamin E supplements experienced improved immune function.
Spanish researchers studied otherwise healthy elderly men and women whose immune functions were impaired compared to a control group. However, taking 200 mg (about 300 IU) of vitamin E for three months significantly improved immune functions among members of the group, bringing their levels close to those of the controls.
These findings "suggest that supplementation with vitamin E can produce an improvement of immune functions and therefore of health in aged people," researchers concluded.
Earlier research conducted in Italy points to the possible role of vitamin E in protecting against cognitive impairment and dementia.
In this study, about 1,000 people age 65 and up received clinical and neuropsychological examinations, donated blood for vitamin E analysis and had their diets assessed.
Participants with the lowest blood levels of vitamin E had a significantly higher probability of being demented and of suffering from cognitive impairment, compared to those with the highest vitamin E levels.
Before conducting the study, researchers were faced with conflicting evidence that antioxidants contribute to the maintenance of cognitive function. However, the findings of this study led them to conclude that the antioxidant vitamin E does appear to serve in this capacity.
Sources: Free Radic Res. 2008 Mar;42(3):272-80; Neurobiol Aging. 2005 Jul;26(7):987-94. Epub 2004 Nov 5
Berries may reverse memory loss
If you're getting forgetful as you get older, then a research team at Peninsula Medical School in the Southwest of England may have good news for you.
They have found that phytochemical-rich foods, such as blueberries, are effective at reversing age-related deficits in memory, according to a study soon to be published. The researchers supplemented a regular diet with blueberries over a 12-week period, and found that improvements in spatial working memory tasks emerged within three weeks and continued throughout the period of the study.
Blueberries are a major source of flavonoids, in particular anthocyanins and flavanols. Although the precise ways in which these molecules affect the brain are unknown, they have been shown to cross the blood brain barrier after dietary intake. It is believed that they exert their effects on learning and memory by enhancing existing neuronal (brain cell) connections, improving cellular communications and stimulating neuronal regeneration.
Source: The Peninsula College of Medicine and Dentistry , Apr 10, 2008
Depression and pregnancy
Chinese researchers report that omega-3s may offer an alternative to antidepressant medications during pregnancy. The double-blind, placebo-controlled study involved 24 pregnant women with major depressive disorder. From one month prior to starting the study, no medications were used by the patients, who were then randomized to receive 3.4 g/d of omega-3 or placebo for 8 weeks. By six and eight weeks, those in the omega-3 group had significantly lower scores for depressive symptoms on three common rating scales, compared with women taking placebo. The authors conclude that "Omega-3...may have therapeutic benefits in depression during pregnancy" and recommend further study.
Source: Clin Psychiatry, 2008, Mar 18; [Epub ahead of print]
Vitamin slashes cancer risk
Getting more vitamin K2 may reduce the risk of prostate cancer by 35%, according to results from the European Prospective Investigation into Cancer and Nutrition (EPIC). The German researchers noted that the potential benefits of K2 were more pronounced for cases of advanced prostate cancer. The study adds to a growing awareness of the potential health benefits of vitamin K2, most notable for bone and blood health, but also recently linked to improved skin health.
There are two main forms of vitamin K: phylloquinone (vitamin K1) and menaquinones (vitamin K2). The protective effect in this study was only noted with the K2 type.
Source: American Journal of Clinical Nutrition, Apr 2008
Hyaluronic acid
What is it? A lubricating and protective substance found in the fluid of joints.
Why use it? To reduce pain and improve symptoms of arthritis; to help heal wounds.
What's the research?Studies show that the HA content in osteoarthritic cartilage is reduced and that supplementation eases pain and improves joint function. Lab studies show that HA can stimulate chondrocyte metabolism, the process responsible for joint cartilage production and maintenance.
More help for blood pressure
According to UK Researchers at the Imperial College London, getting higher dietary levels of phosphorous, calcium and magnesium can help prevent or control high blood pressure. Their study involved 4,680 men and women from Japan, China, United Kingdom and Unites States, and used blood pressure measurements and food diaries.
Source: Hypertension, 2008; 51(3): 669-75
Multi helps with infertility
US researchers from the Department of Nutrition at the Harvard School of Public Health report that taking a daily multivitamin tablet can reduce the risk of ovulatory infertility (not developing and releasing a mature egg every month). Their 8-year study involved 18,555 married, premenopausal women without a history of infertility. They found that women taking two or less multivitamin tablets per week had a 12% reduced risk of ovulatory infertility; women taking three to five multivitamin tablets per weeks had a 31% reduced risk; and women taking six or more multivitamin tablets per week had a 41% reduced risk, compared to women who did not use multivitamin supplements. The risk reduction was partly explained by folic acid, say the researchers.
Source: Fertil Steril, 2008; 89(3): 668-76
Omega-3 for less dementia
Researchers from Italy report that, compared to subjects with normal cognitive function, those with dementia were found to have lower omega-3 fatty acid levels, particularly alpha-linolenic acid levels.
Source: J Gerontol A Biol Sci Med Sci, 2007; 62(10): 1120-6.
Resveratrol targets cancer
University of Rochester researchers showed for the first time that a natural antioxidant found in grape skins and red wine can help destroy pancreatic cancer cells by reaching to the cell's core energy source, or mitochondria, and crippling its function. The study also showed that when the pancreatic cancer cells were doubly assaulted (pre-treated with the antioxidant, resveratrol, and irradiated) the combination induced a type of cell death called apoptosis, an important goal of cancer therapy. It appears that resveratrol not only reaches its intended target, injuring the nexus of malignant cells, but also protects normal tissue from the harmful effects of radiation. While additional studies are needed, research indicates that resveratrol has a promising future
Source: University of Rochester Medical Center, Mar 25, 2008
These articles are based upon current scientific studies and professional opinions; however, they are not to be regarded or relied upon as medical advice for self-diagnosis or treatment of any condition or disease.
Copyright 2008 Health News Update
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