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Vitamin D as effective as vaccine in preventing flu
Taking high doses of vitamin D3 supplements in winter helps reduce risk of acquiring seasonal flu in winter, a new Japanese trial demonstrated.
The trial results, reported in the March 10, 2010 issue of American Journal of Clinical Nutrition, show that children given vitamin D(3) supplement were 42 percent less likely to get infected with seasonal flu than those who were given a placebo.
The efficacy is remarkable as it may be comparable to that of flu vaccine, which is generally low because the virus used to construct the vaccine is likely different from the circulating one.
Deficiency of Vitamin D, which is synthesized after human skin is exposed to sunlight or UV rays, has been associated with increased risk of seasonal flu and swine flu as well. However, most of such studies were epidemiological or observational.
Posted in Q & A Health
Tagged American Journal of Clinical Nutrition, Clinical, deficiency of vitamin d, double blind placebo, flu vaccine, influenza, issue, journal of clinical nutrition, March, minato ku, molecular epidemiology, Nutrition, percent, placebo group, risk, schoolchildren, show, swine flu
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