Answer this one: The STD chlamydia is a bacterium that is transmitted through intimate physical contact. What's the most common means of transmission?
An excess of cholesterol can build up in the arteries, narrowing them and slowing or blocking blood flow to the heart. Take this quiz to learn more about cholesterol and its role in your health.
'Choose My Plate' Quiz
How many cups of vegetables should you eat each day? How about milk? Meat? The My Plate eating plan can help you find out.
Chronic Fatigue Syndrome Quiz
We all get tired. Many of us have felt depressed at times. But the mystery known as chronic fatigue syndrome is not like the normal ups and downs we experience in everyday life.
Colorectal Cancer: Test Your Knowledge
True or false: Colorectal cancer—cancer of the colon or rectum—is the second leading cause of cancer death in the United States.
Common Cold Quiz
True or false: More than 200 viruses cause colds.
Find out more about constipation by taking this quiz.
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.
Smoking is the main cause of chronic obstructive pulmonary disease (COPD), a serious, debilitating and often fatal illness. Take this quiz to find out more about COPD and how to prevent it.
Coronary Artery Disease and Angioplasty 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.
CPR and Defibrillator Quiz
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.
Creutzfeldt-Jakob Disease Quiz
Thirty years ago, few people had heard of Creutzfeldt-Jakob disease (CJD). Today, it has made the news, mostly from its possible association with "mad cow disease." To help make sense of this puzzling disease, take this quiz.
Crime and Older Adults Quiz
What do you know about crime against the elderly, and how to prevent it?
You’ve been vowing to get more exercise, so why not pump up the tires and head out on your bike? Better yet, get the family out with you, and everyone benefits.
Cystic Fibrosis Quiz
Cystic fibrosis (CF) is an inherited, often fatal disease of the body's mucus glands. It affects about 30,000 children and young adults in the United States, most of them descendants of people from northern Europe. Find out more about CF by taking this quiz.
Answer this one: Depression peaks at certain life stages. People in which group are likely to experience it most often?
More than 18 million Americans have been diagnosed with diabetes and more than 5 million more have diabetes but don't realize it, according to the CDC. Yet diabetes is the sixth leading cause of death in the United States.
Diabetes: Test Your Knowledge
If you have diabetes, keeping your condition under control early on will help you avoid complications that may come up later. This multiple-choice quiz will help you with important answers now.
The kidney's main job is to get rid of excess fluid and waste material in your blood. A person with kidney failure needs dialysis or a kidney transplant to survive. Learn more about dialysis by taking this quiz.
Anyone can get diarrhea. In fact, the typical American adult experiences diarrhea about four times a year. Most cases of diarrhea last a day or two and need no treatment. Find out more about this common digestive problem by taking this quiz.
At any given time, millions of people in the U.S. are trying to lose weight. They spend billions of dollars each year on weight-loss products and services. Learn more about diets and weight loss by taking this quiz.
Dietary Fiber Quiz
You hear a lot about fiber and why you need it. But what is it? Learn more about this important part of your diet by taking this quiz.
Dietary Guidelines Quiz
Find out how much you know about the newest dietary guidelines and how they differ from the old food pyramid.
Dietary Supplement Quiz
Many Americans take vitamins, minerals, or other dietary supplements every day without knowing enough to ensure optimum results.
Digestive System Quiz
What happens to that cheeseburger and fries you had for lunch? During the digestive process, food is converted into energy that's used by your body. Take this quiz to see how much you know about how digestion works.