[ginko]

Vitamin D is extremely important to health. It's a 7 dollar supplement. It's free if you spend time outdoors.

It definitely has preventative value, and it probably has value when someone has cancer as well since it regulates the immune system and can turn genes on and off.

"In 1999, researchers in Israel, found that calcitriol(vit D) levels were twice as high in patients with less aggressive colon cancer but were quite low in those with advanced metastatic disease. They concluded that higher calcitriol levels may prevent further transformation of the cells or may induce cell differentiation, growth inhibition or apoptosis (normal cell death)."

So in colon cancer, higher vitamin d levels equated to slower cancer growth. Does this mean it will have the same effect in other cancers? Maybe not, but I think it's worth a shot, dont you?