Evaluating Internet Health Information (Tutorial from the National Library of Medicine.) 

MEDLINEplus Health Topics (Quality health care information for the public from the National Library of Medicine at the National Institutes of Health.) 

Healthfinder (Searchable gateway to selected consumer health information provided by U.S. government agencies and other organizations serving the public interest.) 

MayoClinic.com

Merck Manual of Medical Information–Home Edition (Information in everyday language about diseases, diagnosis, prevention, and treatment.) 

Centers for Disease Control and Prevention

WebMD  (American corporation providing health information.) 

Your Disease Risk (Find out your risk of developing five of the most important diseases in the U.S. and get personalized tips for preventing them.) 

Who Named It? (Survey of medical phenomena named for a person–e.g. Achilles’ tendon or Alzheimer’s disease. 

Diagnostic Tests–Harvard Medical School Family Health Guide (Explanation of many diagnostic tests–what the test is, how to prepare for it, what happens when the test is performed, etc.) 

Clinical Trials (Current information about clinical research studies–site developed by the National Institutes of Health.) 

National Cancer Institute (Information on every type of cancer including stages, treatment, clinical trials, etc.) 

National Institute of Neurological Disorders and Stroke (Disorders of the brain and nervous system.) 

The World’s Healthiest Foods (Information about 127 nutrient-rich foods.) 

Smoking & Tobacco Use (From the Centers for Disease Control and Prevention.) 

Substance Abuse and Mental Health Services Administration

Human Anatomy Online (Uses text, illustrations, and animations to explain the various systems of the body.) 

Interactive Body–BBC (Assemble various organs,  bones, and  muscles in the right places.) 

Neuroscience for Kids (Comprehensive site on the nervous system–includes effects of drugs and neurological and mental disorders.)