The Internet offers countless health-related web sites sponsored by government and private organizations. The health and medical web sites we've found helpful include:

Administration on Aging
Centers for Disease Control and Prevention
Entrez - Life Sciences Search Engine
Face the Issue
Family Doctor.org
Go Ask Alice
GirlsHealth.gov
Health Finder
HIV InSite
Kids Health
Mayo Clinic.com
Medem Medical Library
Medline Plus Health Information
National Cancer Institute
National Heart, Lung, and Blood Institute
National Institutes of Health (NIH)
National Women's Health Information Center
NIHSeniorHealth.gov
NIMH - Men and Depression
NOAH - New York Online Access to Health
Nutrition and Your Health: Dietary Guidelines for Americans
Ulifeline
World Health Organization