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

The Prostatitis Foundation educates about prostatitis and chronic pelvic pain syndrome and is a registered 501(c)3 nonprofit organization.

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. Housed within the Library is one of the world's finest medical history collections of old (pre-1914) and rare medical texts, manuscripts, and incunabula.

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.

Answers.com: Wiki Q&A combined with free online dictionary, thesaurus, and encyclopedias. Ask questions, get answers.

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