Psoriasis is a chronic skin disease that affects millions of Americans. Although it can affect people of any age, it occurs mostly in young adults. Find out more about this disease by taking this quiz, based on information from the National Institute of Arthritis and Musculoskeletal Diseases, the American Academy of Dermatology, and the National Psoriasis Foundation.

Experts are increasingly urging people to know their BMI, a figure that takes into account not just weight but also height to indicate body fat.

Most people get an occasional bout of heartburn—that burning feeling in the chest about a half-hour after eating. But if you get it often, you may have GERD.

The vertebrae in your spine are cushioned by soft disks. When one of the disks in your neck—the cervical area of your spine—ruptures, the result can be neck pain. Watch this video to find out the possible causes and recommended treatment.

Plastic surgery is becoming more popular, with the most common procedure now breast augmentation, or enlargement. Contrary to what you may think, women with breast implants aren't immune to breast cancer.