Health On the Net Foundation

Guides lay persons and non-medical users and medical practitioners to useful and reliable online medical and health information. Provides leadership in setting ethical standards for Web site developers.
http://www.hon.ch/

InteliHealth

Harvard Medical School's consumer health information, journal databases, a medical dictionary, FAQs on latest news and live forums.
http://www.intelihealth.com/

BBC Health

Features current news plus archives, guides by subject, "Ask a Doctor" inquiry feature, a searchable conditions database, message board, and e-mail newsletter subscription.
http://www.bbc.co.uk/health/

C-Health

Features current health news, columnists, health association news, and a searchable database called "Disease in Depth" for more information about any particular disease or condition.
http://chealth.canoe.ca/

WebMD

Comprehensive health resources for consumers, physicians, nurses, and educators. Includes news, chat forums, health quizzes and consumer product updates.
http://www.webmd.com/