Merck Manual of Diagnosis and Therapy

Communicating with Your Health Provider 

Medline Plus Health Information 

NIH Online Consumer Health Publications       

Healthfinder 

Family Doctor 

Net Wellness 

drkoop.com 

Healthtouch Online 

Mayo Clinic: Health Oasis

Travel Health

Go Ask Alice
Expert advice on health issues related to sex

Division of Sexually Transmitted Diseases Facts & Information

Virtual Hospital: Information for Patients