Hot weather, clear skies, and extra leisure time in the summer mean that many people spend hours in the sun. Lengthy sun exposure can raise the risk for skin cancer if you don't take steps to protect yourself.

This calculator is for children with asthma. If you know your child's height, you can find his or her predicted peak flow.

Breast cancer is the most commonly diagnosed cancer in women (other than skin cancer). The American Cancer Society reports the breast cancer death rate is declining, probably because of earlier detection and improved treatment. This short assessment will help you determine if you have major risk factors for breast cancer.

Spinal stenosis is a condition in which the spinal canal narrows and pinches the nerves, resulting in back and leg pain. Spinal stenosis often occurs in older adults, although younger people who are born with a small spinal canal may also develop symptoms. This video explains the condition and what treatments are recommended.

Most people have heard of diabetes – and may even know someone who has it. But what about prediabetes? If you aren't aware of it, you’re not the only one. A recent government report found that many Americans aren't familiar with the condition, even t

Information on more than 370 topics, featuring illustrations designed to clarify complex anatomy and procedures.

Tap into this interactive encyclopedia for instant access to information on more than 835 diseases and conditions.

Enjoy good health at every age: know your body and how it works, eat well and stay active, and follow a plan for disease prevention.