Low Vitamin D Levels Linked to Colds
Study Shows Vitamin D May Have a Role to Play in Preventing Colds and Flu
By Jennifer Warner
WebMD Health News Reviewed by Louise Chang, MD
Feb. 23, 2009 -- A walk in the sun may be better than popping a vitamin C tablet for boosting your chances of preventing the common cold or flu.

A new study adds to mounting evidence that vitamin C may have been stealing the spotlight all these years from the real cold fighter, vitamin D.

The study, the largest to date on the link between vitamin D and common respiratory infections, shows that people with the lowest vitamin D levels report having significantly more cases of cold and flu than those with higher levels. Vitamin D is produced by the body in response to sunlight and is also found in fortified foods such as milk.......