Mayo Clinic offers award-winning medical and health information and tools for healthy living.

Your guide to prostate cancer. From risk factors and prevention to diagnosis and treatment, your About.com guide to prostate cancer will cover what you need to know about prostate cancer.

The National Library of Medicine (NLM), on the campus of NIH in Bethesda, Maryland, is the world's largest medical library. It collects materials in all major areas of the health sciences and to a lesser degree in such areas as chemistry, physics, botany and zoology. The collections stand at 5 million items--books, journals, technical reports, manuscripts, microfilms, photographs and images. Hous

Accurate, up-to-date, comprehensive cancer information from the U.S. government's principal agency for cancer research.

The leading source for trustworthy and timely health and medical news and information. Providing credible health information, supportive community, and educational services by blending award-winning expertise in content, community services, expert commentary, and medical review.

The largest urology website, providing physician-monitored info on genito-urinary conditions. Ask a doctor, find a urologist, share your story, and more.