Ask Dr. Weil - The alternative medicine guru ofers advice on vitamins and natural remedies.
Center for Disease Control and Prevention - Information on food-borne illnesses or useful if you're going to Kenya and want to learn about recent outbreaks of Rift Valley fever.
Dr. Koop's Community - Presents information on diseases and medications along with a section on medical insurance, and an online prescription-refill service. Koop helps choose the site's offerings, but doesn't contribute material.
healthfinder - No-frills gateway to medical journals, news, databases, libraries, state agencies, educational sites, organizations, and support groups.
HealthGate - Basics on more than 100 illnesses and conditions, along with resources on healthy living, parenting, and more.
Intelihealth - Top site for medical news, condition-specific information, drug data, and an "Ask the Doc" forum.
Mayo Clinic Health Oasis - News and links organized into nine categories, including cancer, medicine, nutrition, and children's health.
National Institutes of Health - Information on clinical-trial databases, consumer-health publications, and an index of health conditions being investigated.
National Library of Medicine - Centerpiece for MedLine, a free database of citations and abstracts from 3,900 medical journals.
OncoLink - Information about various cancers and related treatments, clinical trials and support groups.