Taking high-dose vitamin E supplements long-term can cause serious side effects like bleeding, stroke, and heart failure. Learn safe dosing and warning signs.

More than 40 percent of the U.S. population is estimated to have a vitamin D deficiency, especially in regions with less year-round sun exposure. The vitamin, which is vital for the body’s absorption ...

Despite observational evidence that vitamin E supplementation is associated with decreased risk for cardiovascular disease and cancer, clinical trial results have been disappointing. In a previously ...