The American Medical Association and the American College of Sports Medicine want doctors to order regular exercise for practically all their patients.

  The benefits of breastfeeding don?t stop when your baby is weaned. A new study suggests that breastfeeding may protect your baby against developing heart disease later in life.

  Researchers have found that children in the third and sixth grades who get less sleep are more likely to be overweight by the sixth grade.

  A silent type of artery disease that raises the risk of heart attacks and strokes is on the rise in American women, researchers say.

  Watching too much violence on TV at a young age may lead to antisocial behavior later on, a study shows.

  If you're being treated for hypertension, take note: Your blood pressure is more likely to return to normal levels in summer than in winter, a new study shows.

  There?s more good news for chocolate lovers. A Japanese study suggests that dark chocolate can improve blood flow to heart muscle.

  Where in your community does MRSA lurk? You can find it in gyms, barracks, prisons, and schools -- but also in your very own nose.

  The antipsychotic drug Risperdal may ease depression in patients who don't respond to antidepressants, say scientists who work for Risperdal's maker.

  Among postmenopausal women, nonmelanoma skin cancer may be rarer among those who drink caffeinated coffee, researchers report.

  Antioxidants found in many fruits, vegetables, nuts, tea, and wine may cut fatty buildup in fat cells, Taiwanese experiments show.

  By tweaking a single gene, Case Western Reserve Univ. scientists have bred mice that outrun and outlive ordinary mice.

  Psychological stress may make it harder for skin to keep infections at bay, scientists report in The Journal of Clinical Investigation.

  The percentage of U.S. adults aged 35 and older with diabetes who report having heart disease dropped 11% between 1997 and 2005, says the CDC.