Sleep Medicine Health Library

A prostate biopsy is when a tiny sample of tissue is taken from the prostate gland and checked for cancer. Find out when you may need one, and how it’s done.

Antibiotics have been called "wonder drugs," because of their ability to treat bacterial infections that were once deadly. Antibiotics have saved countless lives since they were first introduced 60 years ago. But over use of these drugs has allowed some bacteria to become resistant to them.

Abnormal uterine bleeding is irregular bleeding during a menstrual cycle that is caused by hormonal problems. The most common hormonal irregularity occurs because the ovary did not produce an egg during that particular cycle. This video explores other causes and when this bleeding is of concern.