Medline
A free service of The National Library of Medicine, Medline is the world's most extensive collection of published medical information.

Oncolink
A must stop for anyone diagnosed with cancer. Sponsored by the University of Pennsylvania Cancer Center, this enormous information bank contains news on the latest treatment trends and provides direct links to cancer journals. It also allows you to search for data specific to your disease.

Psych Central
Plenty of good information and resources for people seeking information on mental health issues.

Obgyn.net
This doctor-reviewed site has just about everything you may need on women's health. It also provides over 4,500 links to other medical sites.

KidsHealth
A winner of numerous online awards, KidsHealth contains the equivalent of thousands of pages of printed material, organized in a concise, easy-to-read manner.