Researchers at University College London treated aging mice with vitamin D3 for six weeks and reported reduced retinal inflammation and amyloid levels, which they suggest may bear on age-related macular degeneration. The work was done in mice.
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Vitamins
Research on vitamins A through K, deficiencies and supplementation.
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Vitamins
Low vitamin D levels linked to depression (PR)
UT Southwestern psychiatrists examined nearly 12,600 Cooper Center participants from 2006 to 2010 and found higher vitamin D levels tracked with significantly lower risk of current depression, especially in people with a prior history. They stop short of urging supplements.
Vitamins
Too much of vitamin D may harm the heart
In more than 15,000 people, Johns Hopkins researchers found vitamin D lowered c-reactive protein only up to normal blood levels; above that, CRP rose. Lead author Muhammad Amer says the vitamin helps the heart at low levels but at some point can be too much of a good thing.
Vitamins
Why this Vitamin is Better than ANY Vaccine and Improves Your Immune System by 3-5 Times (Opinion)
Dr. Joe Prendergast tells Mercola that German researchers found vitamin D raises immune function three- to fivefold, and argues it does more for immunity than any vaccine. The post calls vitamin D a steroid hormone that influences nearly 3,000 genes.
Vitamins
The Dr. Oz Show: Information I Couldn't Share
Ahead of his third Dr. Oz appearance, Mercola says the show's roughly 20-second answers left no room for detail and expands on the five topics covered: vitamin D, CoQ10 and ubiquinol, hypertension, statins and antidepressants.
Vitamins
Low vitamin D linked to prehypertension - Study
Among 9,215 NHANES III participants free of hypertension, those in the lowest quartile of serum vitamin D were 48 percent more likely to have prehypertension than those in the highest, independent of BMI, cholesterol, C-reactive protein and kidney filtration rate.
Vitamins
Vitamin C may help prevent stomach cancer
Reviewing earlier clinical studies, researchers report high H. pylori prevalence tracks with low vitamin C in blood and gastric juice, and that high gastric vitamin C may inactivate the bacteria's urease. They suggest supplementing after standard treatment to prevent reinfection, not a cure.
Vitamins
Diets high in Omega 3 fatty acid, vitamin B, C, D and E help prevent Alzheimer's disease
A study in Neurology found people with higher blood levels of omega-3 fatty acids and vitamins B, C, D and E were less likely to show the brain shrinkage tied to Alzheimer's and scored better on thinking and memory tests, while high trans fat diets tracked with the opposite.
Vitamins
Vitamin D may help children with asthma
Among 86 children studied in London, those with therapy-resistant asthma averaged 28 nmol/L of vitamin D, against 42.5 in children with moderate asthma and 56.5 in those without asthma. Higher levels tracked with better lung function and fewer exacerbations.
Vitamins
Want to live a few more years? Take vitamin D supplements!
Pooling 14 prospective studies of 62,548 people, researchers found those with the lowest vitamin D had a 29 percent higher death risk than those with the highest. Risk fell as 25(OH)D rose toward about 75-87.5 nmol/L, with no further reduction above that.
Vitamins
The Best "Drug" for Slashing Your Risk of Cancer?
Mercola urges vitamin D optimization, normalized insulin and exercise as mainstream cancer prevention, citing research suggesting sun exposure could roughly halve cancer risk. He points to UK projections of a 45 percent rise in new cases by 2030 and a $286 billion annual global cost.
Vitamins
The Vitamin Which Can Cut Your Flu Risk Nearly in Half
In a randomized, double-blind trial of 430 children aged 6 to 15 followed from December 2008 to March 2009, those taking 1,200 IU of vitamin D3 daily were 42 percent less likely to come down with influenza than those given a placebo.
Vitamins
The difference between a prophet and a madman - vitamin d newsletter
John Cannell reprints his British Journal of Nutrition article on Edgar Hope-Simpson, the self-taught epidemiologist who worked out the cause of shingles and spent his last two decades arguing that an unknown “seasonal stimulus” averse to sunlight governs influenza.
Vitamins
Vitamin D Deficiency Linked to High Risk of Type 2 Diabetes Mellitus
Among 411 obese children and 87 normal-weight ones, those with lower vitamin D levels showed greater insulin resistance, University of Texas researchers report. Lead author Micah Olson says the study could not prove a link between low vitamin D and type 2 diabetes.
Vitamins
Vitamin D deficiency in pregnant women boosts risk of type 1 diabetes in children
Comparing 109 Norwegian women whose children developed type 1 diabetes with 219 whose children did not, researchers found children of mothers with the lowest serum vitamin D in pregnancy were more than twice as likely to develop the disease.
Vitamins
Vitamin D may delay progression of clinical diabetes
John Cannell points to a Tufts double-blind randomized trial in which 2,000 IU of vitamin D3 a day had a major effect on insulin resistance. Its authors said vitamin D may have a role in delaying progression to clinical diabetes in adults at high risk of type 2.
Vitamins
This Vitamin D Supplement Mistake Raises Your Death Rate by 2% -- Are You at Risk? (comment)
Mercola cites a Cochrane meta-analysis of 50 randomized trials covering 94,000 participants that showed a 6 percent relative mortality reduction with vitamin D3 and a 2 percent increase with D2. He urges readers using oral supplements to take D3 and aim for a serum level of 50-70 ng/ml.
Vitamins
Vitamin C may help heart failure patients
Among 212 heart failure patients, those with low vitamin C intake were 2.4 times more likely to show elevated hsCRP, and those with both low intake and hsCRP above 3 mg/L were about twice as likely to die of cardiovascular disease during the first year of follow-up.
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