There is an epidemic of obesity in this country, health experts say. But what is obesity? How is it measured?

Answer this one: In which situation(s) should you call an ambulance instead of driving to the hospital emergency department?

True or false: What percentage of people have a fire escape plan for their home? Learn the answers to important fire prevention questions by taking this quiz.

Think all fats are alike? Think again. Take this quiz to learn about trans fats and their impact on your health.

Sudden cardiac death is the leading cause of death in adults in the United States. Knowing CPR may help you save someone's life. Learn more about CPR by taking this quiz.

Atherosclerosis, or coronary artery disease (CAD), plays a major role in the leading cause of death in this country: heart attack. Learn more about this disease and a common procedure used to treat it.

About half of all pregnancies are unplanned, says the American College of Obstetricians and Gynecologists. But women today have many safe and reliable options to choose from if they want to prevent pregnancy. Test your knowledge of contraception by taking this quiz.

Asthma is a disease that affects the lungs. It is the most common long-term disease of children. Test your knowledge of living with asthma with this quiz.

Find out how much you know about asthma basics with this quiz.

True or False: Arthritis affects only the wrist, ankle, and knee joints.