Health Library

There are millions of pet cats in the U.S. Sometimes cats can cause an illness called cat scratch disease. Find out more about this illness by taking this quiz.

The more active you are, the more calories you burn. Running or jogging, for instance, burns more calories than bowling.

Lung cancer is a cancer that starts in the lungs. The major cause of lung cancer is smoking cigarettes. Learn about risk factors for lung cancer by taking this short assessment.

Migraine headaches are intense, recurrent headaches that may occur at any age but usually begin between the ages of 10 and 30 years. The precise cause is unknown, but it is hereditary in up to 80 percent of cases. This video gives additional details about migraines, including their symptoms and effective treatments.

An echocardiogram can measure heart structures, such as the heart's pumping chambers, the size of the heart itself, and the thickness of the heart walls.