The American Heart Association (AHA) has identified seven simple steps people can take to reduce their risk of heart disease. But new evidence suggests that the AHA's "Life's Simple 7" may wind up benefiting much more than patients' hearts. {C}

For most people, slimming down can lower the risk for many conditions. But, for postmenopausal women, maintaining a healthy weight may be especially important.

For those in midlife, lifestyle choices made now may have a major impact on living long and staying independent later in life.

Think running an extra mile will balance out that extra serving of ice cream? Weight loss might not be as easy as the math of calorie counting.

Exercise — it's good for more than just keeping the weight off.

Controlling cancer requires multiple prevention strategies. The United States has made some notable progress in recent years, but there's still room for improvement.

Exercise is almost never a bad thing, but new evidence suggests that not all exercise is created equal.

Knee pain — a sign of arthritis, related to obesity or just the result of getting older? Whatever the reason, diet and exercise might be able to prevent or reduce knee pain in overweight older adults with diabetes.

They may be key to weight loss and good health, but diet and exercise may sometimes need a little help from obesity medications and surgery.

Exercise doesn't have to be complicated. Even simple walks with friends may improve your health.