The Vitamin D Council's newsletter rounds up recent studies, opening with H1N1. The author notes 36 US children had died that season and argues CDC data hint at vitamin D deficiency, since nearly two-thirds of them had epilepsy, cerebral palsy or similar conditions.
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Nutrition
Vitamins, minerals, supplements, herbs and diet: the research on how what we eat shapes our health.
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Vitamins
Vitamin C deficiency may impair brain development
Newborn guinea pigs with moderate vitamin C deficiency had 30 percent fewer hippocampal neurons and markedly worse spatial memory than those fed enough, a University of Copenhagen study found. The authors suggest deficiency in pregnant women may similarly affect infant brain development.
Minerals
Magnesium: What you need to know
A primer on magnesium: the body holds about 35 grams, over 60 percent of it in the skeleton, and the mineral figures in hundreds of metabolic reactions. Deficiency is rare in healthy people but more likely with gut or kidney disorders, chronic alcoholism or older age.
Supplements
Aloe vera: What you need to know
A primer on aloe vera: its recorded use back to early Egypt, traditional use on wounds and as a laxative, and present-day use for burns, diabetes, asthma and arthritis. Scientific evidence for the cosmetic and therapeutic claims is described as limited and often contradictory.
Diet
How to prevent prostate cancer?
A roundup of earlier reports on diet and prostate cancer, covering plant-based diets, black tea, lycopene with soy isoflavones, and a Japanese study in which men drinking five or more cups of green tea a day were 48 percent less likely to develop advanced disease.
Diet
Does obesity raise prostate cancer risk?
Brenda Hernandez examined health data on 84,000 men and found those obese or overweight at 21 had lower risk of localized, low-grade prostate cancer, while heavy weight gain in young adulthood tracked with advanced, high-grade disease in white men.
Diet
Mediterranean diet beats low-fat diet in diabetes management
Italian researchers followed 215 type 2 diabetes patients for four years: 44% on a low-carbohydrate Mediterranean diet needed blood sugar medication, against 70% on a low-fat diet. Mediterranean dieters also lost 4.4 more pounds and had better cholesterol.
Food
Natural foods "cocktails" may treat cancer
Linus Pauling Institute researchers found chlorophyllin, a chlorophyll derivative, was 10 times more potent than the chemotherapy drug hydroxyurea at killing colon cancer cells, stalling them in the DNA synthesis phase until they died. They hope to pair it with conventional drugs.
Food
Your heart is sweet enough
Nancy Appleton's newsletter welcomes the American Heart Association's call to cut added sugar from an American average of 22 teaspoons a day to 9 for men and 6 for women. The authors still consider that threshold too high, but say it threatens soda makers.
Food
141 reasons sugar ruins your health
An excerpt from Nancy Appleton's book Suicide by Sugar lists claimed harms of sugar, among them suppressed immunity, disturbed mineral balance, lower HDL, chromium and copper deficiency, hyperactivity in children, hypoglycemia and premature aging.
Nutrition
Kennedy Death Puts Spotlight on Brain Cancer
Senator Edward Kennedy died Tuesday after a year with malignant glioma, despite surgery at Duke, chemotherapy and radiation. Neurosurgeon Anthony Caputy explains why surgeons wake patients mid-craniotomy to map speech and motor areas. Doctors still do not know what causes brain tumours.
Food
Soy Reduces Cholesterol in Patients with Type 2 Diabetes
A Physicians Committee for Responsible Medicine item on a Journal of Nutrition crossover trial: 29 adults with type 2 diabetes who ate 40 grams of soy protein a day lowered LDL cholesterol and their LDL-to-HDL ratio more than when they ate milk protein.
Nutrition
Some Radiation Testing Unnecessary
An analysis of insurance claims reported in the New England Journal of Medicine found two-thirds of filers had undergone at least one test exposing them to radiation, and a fifth of that group received moderate to high doses. Radiation causes 2% of all cancers, the article notes.
Vitamins
Canada Looks at Vitamin D for Swine Flu Protection
The Public Health Agency of Canada confirmed it will adapt an existing study of vitamin D and severe seasonal influenza to the H1N1 virus, partly to learn whether vitamin D levels explain why most flu cases stay mild. Dr. Mercola urges readers not to wait for the results.
Food
Sugar-free drinks help in battle of obesity
A study of more than 300 people in the International Journal of Obesity suggests artificially sweetened beverages may help people maintain weight loss, alongside eating less fat and cutting caloric drinks. Adam Drewnowski cautions that low-calorie sweeteners are not magic bullets.
Nutrition
CDC Considers Routine Circumcision
CDC is weighing whether to endorse routine newborn circumcision and the procedure for high-risk heterosexual men, after African studies found circumcised men less likely to catch HIV from female partners. Critics note no benefit among gay men and surgery on healthy infants.
Vitamins
Low vitamin D doubles heart risk in diabetics
Washington University researchers report in Circulation that vitamin D deficiency may double cardiovascular risk in people with diabetes. Without enough vitamin D, macrophage cells take up cholesterol they cannot clear, which builds up in blood vessels and stiffens them.
Minerals
Drinking too much cola may induce potassium deficiency
Greek researchers reviewed cases of people who drank 2 to 10 quarts of cola a day and developed potassium deficiency, with effects from fatigue and muscle weakness to paralysis; one man who drank 10 quarts daily suffered lung paralysis. They suspect caffeine and sugar are involved.
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