ABC News: Low Vitamin D May Worsen Breast Cancer

ABC News: Low Vitamin D May Worsen Breast Cancer:

"Researchers found for the first time that women who were vitamin D deficient at the time of their breast cancer diagnosis were 94 percent more likely to have their cancer spread, and 73 percent more likely to die from their cancer, compared with women who were not vitamin D deficient."

Where can you get vitamin D? Cod liver oil is very high in it. But many other foods (from milk to cereals) are supplemented.