Angelina Jolie's case highlights the importance of knowing one's family history and learning one's cancer risks in order to address them proactively.

Like most physicians, Dr. Roberto Bolli was taught that heart cells don't regenerate, and that any cells which die from loss of oxygen during a heart attack are lost forever. But the lesson never quite sunk in.

We know that we're likely to melt down when things get hectic, but what exactly are we supposed to do with that information? New research may offer a remarkably effective and simple recourse.

The report says only about half of the nation's youngsters are getting at least an hour of vigorous or moderate-intensity physical activity every day.