Vitamin D won't reduce cancer risk, study finds
Researchers have long considered the possibility that Vitamin D might be used to prevent cancer, but a new study shows that is not the case.
The large-scale study looked at whether increased Vitamin D would reduce the risk in seven cancers - non-Hodgkin lymphoma and cancers of the endometrium, esophagus, stomach, kidney, ovary or pancreas.
Kathy J. Helzlsouer, director of the Prevention & Research Center at Mercy Medical Center, chaired the study. Other institutitions, including the National Institutes of Health and National Cancer Institute, were also involved. Details will appear in the July 1 issue of the American Journal of Epidemiology.
Researchers took samples of Vitamin D levels from about 12,000 men and women before they were diagnosed with cancer. They followed the people for more than three decades.
They then compared the samples to those participants who were eventually diagnosed with cancer during that time period to those who didn't get the disease. There was no significant variation of Vitamin D levels between the two groups, meaning higher levels didn't make a difference in cancer risk.
Vitamin D is made naturally by the body when the skin is exposed to sunlight. It can also be obtained by the body in foods, fortified foods and nutritional supplements. The vitamin is used for healthy bones, calcium absorption and immune function.