Does Vitamin D Stop Flu and Common Cold?

New study on the theory:

Does Vitamin D Stop Flu and Common Cold?
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Vitamin D may protect people -- especially those with asthma and other chronic lung conditions -- from colds and other respiratory tract infections, according to the largest study to date to look at the link.

Unlike other vitamins, a deficiency of vitamin D (which is known as the sunshine vitamin because sun exposure triggers production in the body) is quite common in the United States -- particularly in winter.

At least 50 percent of people in the new study, which included nearly 19,000 people 12 and older, had levels that suggested less-than-optimal protection against respiratory tract infections, according to the report in the Archives of Internal Medicine.

"People think that if they have a good, balanced diet that they will get enough vitamin D, and that's actually not true," said Dr. Michal Melamed, an assistant professor at Albert Einstein College of Medicine in New York. "Unless you eat a lot of fish and drink a lot of milk, you can't get enough...

Does Vitamin D Stop Flu and Common Cold?