A JAMA study of 6,874 Wisconsin patients found 2009 pandemic H1N1 was not associated with more hospital admissions or pneumonia than recent seasonal flu strains. The article also points to a study suggesting vitamin D may beat influenza vaccine at preventing flu.
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Vitamin D
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Vitamins
Could This Simple Habit Actually Reduce Cancer and Diabetes by 50%?
Reuters reports that vitamin D influences more than 200 genes, among them genes tied to cancer and multiple sclerosis, acting through receptors that bind specific spots on the genome. Mercola cites over 800 cancer studies and claims optimal levels can halve the risk of several cancers.
Vitamins
Who Knew this Vitamin Could Prevent Mold Allergies?
A Journal of Clinical Investigation study reported that stronger Th2 reactivity to Aspergillus fumigatus, a common household mould, went with lower average blood vitamin D, leading researchers to suggest vitamin D may help treat or prevent allergy to it.
Vitamins
In memory of one of the greatest contributors to human understanding of vitamin D...
An obituary for vitamin D researcher Dr. Frank C. Garland, who with his brother Cedric first linked vitamin D deficiency to cancer in a 1980 paper and won the Arnold-Rikli Prize. Evidence now covers as many as 20 vitamin D-responsive cancers.
Disease
Vitamin D may help reduce deaths from the Spanish flu pandemic
The CDC said in MMWR that it had overestimated annual flu deaths, putting the real toll at about two-thirds of the 33,000 figure it often cites. The piece also notes a Dermatoendocrinology paper linking solar UVB doses to lower case-fatality rates in the 1918-19 pandemic.
Supplements
Vitamin D May Protect Against Certain Cancers
An Oxford-led study in Genome Research found vitamin D receptor binding sites clustered near genes tied to multiple sclerosis, Crohn's disease, lupus, rheumatoid arthritis, colorectal cancer and chronic lymphocytic leukemia, and traced direct interaction in 200 genes.
Vitamins
Ketamine fights depression, so does vitamin D
Yale researchers mapped ketamine's action in the rat prefrontal cortex and found it works through a pathway requiring mTOR that quickly forms new synaptic connections, which may explain why it lifts depression within hours. The drug must still be given intravenously and can cause psychotic symptoms.
Vitamins
Important Vitamin Deficiency Linked to Arterial Stiffness
In a trial of 44 black teenagers, 2,000 IU of vitamin D a day reduced central arterial stiffness and on average brought participants to sufficiency, while the 400 IU dose recommended by the American Academy of Pediatrics did not.
Food
What causes psoriasis? Beer or vitamin D deficiency?
Women in the Nurses' Health Study II who drank five or more non-light beers a week were 2.3 times as likely to have confirmed psoriasis as non-drinkers, a survey of 82,860 women found. Light beer, wine and liqueurs showed no such link.
Vitamins
The Vitamin D Newsletter: Gary Null and Vitamin D Toxicity
The Vitamin D Council newsletter recounts Gary Null falling ill after a batch of his own supplement apparently held 2,000,000 IU of vitamin D3 per serving instead of 2,000 IU, and revisits 1930s reports of massive doses. The author warns readers not to try such doses.
Minerals
Calcium supplements versus myocardial infarction: What you need to know
University of Auckland researchers pooled more than a dozen trials and epidemiological studies covering 11,921 participants followed about four years, and found people taking calcium supplements were 30 percent more likely to suffer a heart attack. None of them took vitamin D alongside the calcium.
Minerals
Calcium supplements boost myocardial infarction risk
A BMJ meta-analysis of 11 trials and five observational studies found osteoporosis patients taking calcium supplements without vitamin D were 30% more likely to have a heart attack. The link appeared in those whose dietary calcium already averaged above 805 mg a day.
Disease
Can Vaginal gel beat vitamin D in preventing HIV infection?
In the CAPRISA 004 trial of 889 South African women, 1% tenofovir vaginal gel cut HIV acquisition by about 39 percent overall, 54 percent among women who used it as instructed and 28 percent among low adherers. Adverse event rates did not rise. Published in Science.
Vitamins
Vitamin D Helps Prevent Mother-to-Child HIV Transmission
A Journal of Infectious Diseases study of 884 HIV-infected women in Tanzania found those with low vitamin D were 50 percent more likely to pass HIV to their infants by six weeks. Maternal vitamin D status was not linked to low birth weight or preterm birth.
Vitamins
Children with celiac disease should take vitamins
University of Alberta researchers studied 43 children and teens with celiac disease and found low bone density, insufficient vitamin D and under half the recommended vitamin K intake. Diana Mager recommends both vitamins plus daily outdoor activity to protect their bones.
Vitamins
This Vital Vitamin Reduces Diabetes, High Blood Pressure, and Pre-eclampsia in Pregnancy by 30 Percent
British researchers writing in the British Journal of Nutrition made a "strong case" for advising pregnant women to take vitamin D, noting the UK was the only one of 31 countries not recommending it for women of reproductive age. Mercola urges testing 25-hydroxy D in pregnancy.
Vitamins
Canadians should take more vitamin D supplements
Osteoporosis Canada's updated guidelines call for 400 to 1,000 IU of vitamin D daily for adults under 50 and 800 to 2,000 IU for those over 50. The group says winter sunlight at northern latitudes is too weak to sustain production, and advises asking a physician about individual doses.
Vitamins
Vitamin D deficiency linked to Alzheimer's disease
A Neurology study of 340 older adults receiving home care found those with insufficient 25(OH)D were 2.3 times more likely to have dementia, 2.5 times more likely to have Alzheimer's disease and twice as likely to have had a stroke. A separate review tied deficiency to lower cognitive scores.
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