10 Foods That Can Help Prevent Cancer

Wild Salmon

Low vitamin D levels have been linked to several cancers, including colon and breast. Scientists theorize that vitamin D may help block the development of blood vessels that feed growing tumors and help stop the proliferation of cancerous and precancerous cells. To cover your bases, I recommend eating plenty of vitamin D–rich foods, such as wild salmon, and choosing vitamin D–fortified dairy products, like milk and yogurt. Because so few foods provide vitamin D, you should consider a daily multivitamin or separate supplement that provides 800 to 1,000 IUs of vitamin D3 (cholecalciferol, the most potent form).