Fats are important to your diet, as are carbohydrates and proteins. Certain types of fats are better for you than others and eating too much of any kind of fat can pack on the pounds.

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.

Peptic ulcers are erosions in the lining of the esophagus, stomach, or duodenum. Ulcers in the stomach are called gastric ulcers, and duodenal ulcers if in the duodenum. This video explains the possible causes of this disease, including the bacterium Helicobacter pylori.

A myelogram is used to evaluate abnormalities of the spinal canal, including the spinal cord, nerve roots, and other tissues.