Resveratrol

If you could take a pill and prevent further aging, would you take it? Besides extending the length of your life, what if the pill could protect you from cancer, Alzheimer's disease and type 2 diabetes? You might even find your skin looking younger.

A small study of obese men found their metabolism improved when they took a daily supplement of resveratrol, the ingredient that's thought to give red wine its health-promoting powers. And the number of overdose deaths from prescription painkillers more than tripled over the last decade, with middle-aged adults leading the pack.