A study concerning Vitamin D appears in the current online edition of the American Journal of Public Health, and will appear in the February 2006 print edition, citing a possible link between cancers and insufficient Vitamin D.
According to the researchers, the studies (1966 to 2004)suggest that vitamin D can reduce the risk of colon, breast and ovarian cancers, among others, by as much as 50 percent.
Why might vitamin D have a protective effect in the first place?
"Vitamin D's main role is to keep the balance of calcium and phosphorous in the blood, which helps keep bones strong," Sandon, of the American Dietetic Association, said. "However, a lesser-known role is how it regulates cell growth and determines what a cell becomes. A vitamin D deficiency may allow cells to become cancerous rather than becoming healthy cells."
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