The U.S. Dietary Guidelines advise that at least half your daily grain intake be whole grains. That’s easier said than done, in part because it can be hard to identify truly “whole grain” foods. This rule can help you quickly calculate.
Millions of Americans use tanning beds or sunlamps to maintain a year-round glow—or to get more vitamin D, which is produced when the skin is exposed to ultraviolet (UV) radiation, as from sunlight. Could tanning this way actually be healthy?
For years, many experts have complained that the 1997 government guidelines about vitamin D intake were too low. More recent guidelines have left many people confused about whether to start or stop taking D supplements.