These websites have been selected for their breadth of knowledge on various diseases and conditions. All information is free to access.
The CDC is one of the major operating components of the Department of Health and Human Services. See section on Diseases & Conditions.
A government website where you will find information and tools to help you and those you care about stay healthy. See Health Topics page.
This site features information on diseases and conditions, drugs and supplements, tests and procedures and so much more. Information is reviewed by Mayo Clinic clinicians and educators.
MedlinePlus is the National Institutes of Health's Web site for patients and their families and friends. Produced by the National Library of Medicine, the world’s largest medical library, it brings you information about diseases, conditions, and wellness issues in language you can understand. MedlinePlus offers reliable, up-to-date health information, anytime, anywhere, for free.
Includes peer-reviewed clinical review articles covering virtually every known disease and condition; patient education articles; images collection.
The National Heart, Lung, and Blood Institute (NHLBI) provides global leadership for a research, training, and education program to promote the prevention and treatment of heart, lung, and blood diseases and enhance the health of all individuals so that they can live longer and more fulfilling lives.
TeensHealth is part of the KidsHealth family of websites. These sites, run by the nonprofit Nemours Center for Children's Health Media, provide accurate, up-to-date health information that's free of "doctor speak."