In two large studies, vitamin D have been found to have a significant effect in reducing the risk of pancreatic cancer. According to Northwestern University researchers, their study is one of the first known studies to use a large-scale epidemiological survey to examine the relationship between vitamin D supplements and cancer of the pancreas.

Previous research and researchers have gone so far as to state that exposure to solar ultraviolet B (UVB) radiation, which causes the body to manufacture vitamin D, might reduce the risk of 16 types of cancer. "Enhancing vitamin D status appears to be the single most important simple thing people can do to reduce their risk of cancer, apart from avoiding tobacco and moderation in the intake of alcohol."

Because of concern regarding prolonged exposure to the sun and skin cancer risks, and for those living in northern climates, it seems reasonable to conclude that perhaps the sensible alternative is a daily vitamin D supplement. However, if you are a cancer patient undergoing treatment, you should check with your physician before embarking on any supplement program.