Vitamin E
Vitamin E—found in vegetable oil, nuts, and leafy green vegetables—has been thought to prevent heart disease, cancer, and Alzheimer’s disease. Try to get 15 milligrams a day from food. Not only have studies failed to show that vitamin E supplements prevent heart attacks or cancer, but high doses may increase the risk of strokes. On the other hand, some foods can help prevent strokes. One study found that vitamin E from food—but not supplements—helps prevent Alzheimer’s disease.
Bottom line: Don’t take it.
