| The National Center for Health Statistics: Comprehensive information on births, deaths, aging, disease classification and other health statistics. |
| Ask the Medical Expert: Answers to medical related queries searchable from archives of the weekly column. |
| AskDrWalker: Resources and links to medical information. Includes medical databases, medical search engines, diseases and conditions and useful links for health professionals and patients. |
| Best Evidence Topics: Access to evidence-based medicine topics. Includes a searchable database. |
| Building Better Health: Medical and healthcare information on disease and health improvement topics. Includes medical news, clinical research and newsletters. |
| CDC Health Topics A to Z: A listing of disease and health topics from the Center for Disease Control and Prevention in the United States. |
| Centre for Medical Web Research: A virtual centre for researching medical questions on the internet. |
| DiagnosisHealth.com: An online forum discussing various medical topics. |
| DiagnosisHeart.com: Information on heart disease with surgical data and related resources. |
| Disease Conditions and Information: A reference guide for about 100 disease and health conditions in an alphabetical listing. |
| DocMD.com: Provides links to free medical and medically-related sites. |
| Doctor NDTV: Information on a variety of health issues from medical experts. Includes FAQ. |
| Doctor's Desktop: Tables and charts for practicing medical professionals. It also provides an ECG course by e-mail. |
| eMedicine - Consumer Treatment Guidelines: Textbook on the treatment of common medical problems. |
| Essent Medical Library: A patient-oriented health resource provided by the Essent Healthcare system. |
| Globalrph: Provides drug information, intravenous drug dilution standards and online clinical dosing calculators for health care professionals. |
| Guide to Clinical Preventive Services: The 1996 update report of the U.S. Preventive Services Task Force (USPSTF) at the CPMC website. |
| Harrison's Online: Regularly updated online version of the medical textbook. Subscription required with free 4-week trial. |
| Health Information Library: Alphabetical listing of health information topics by the Carle Clinic and Hospital. |
| Healthsites UK: A portal to medical and health information for patients and doctors. Access medical and NHS healthcare sites plus news, advice and complementary therapy resources. |
| HospitalWeb: Directory of medical resources for professionals. |
| Library of the National Medical Society: Links to various journals, online diagnosis, medical textbooks and atlases. Subscription required. |
| Longevity Healthy Aging Research Group: Information from this Canadian organisation on getting older and staying healthy. |
| MDconsult: Includes reference books, journal search, practice guidelines, patient education and drug information. Subscription required with free 10-day pass. |
| MedCalc: A comprehensive collection of online clinical calculators. Includes ABG, GFR, Fluids and BMI calculations and interpretations. |
| MedConnect: Information services with a clinical and practical focus for physicians and other health care professionals. |
| Medical Knowledge Base: Offers discussion forums on topics like cancer, AIDS, arthritis, hepatitis, healthy nutrition and motivation. |
| Medics Travel: Lists hospitals, charities, NGOs and recruitment agencies around the world to help doctors, nurses and medical students plan work and electives overseas. |
| Mediresource: Information on diseases and conditions, support groups and drug information. Primarily patient-oriented. |
| Mednav.com: A guide to resources in medicine and science. Links reviewed by experts, projects with the Journal of the AMA and the journal Science and software tools are offered on the site. |
| MedPix: Database of medical images including radiology, pathology, and dermatology. Case of the Week with CME for physicians and CNE for nurses. |
| MerckMedicus: Links to health resources for patients, professionals and an online medical library. |
| My Body: Interactive symptom checker, includes details of some possible causes. |
| NCEMI: Common Simple Emergencies: An online manual with detailed instructions and illustrations on how to treat various everyday medical emergencies. |
| OHSU Health: Information for patients and clinicians on aspects of healthcare. Includes an index of health topics. |
| Physicians Online: Provides physicians with free access to core services, including MEDLINE, email, private physician discussion groups, full text medical news articles, financial news and stock quote services. Membership required. |
| PolyMedicine.com: Clinicians review electronic medical information resources available in any of the following media: browsable WWW sites, downloadable datasets and software or CD-ROMS. |
| Predictonline: A testing and awareness site to provide the public and healthcare provider with medical information on various medical conditions. |
| Prescriptions of The Country Doctor: A collection of informative and current articles issues written by John G. Hipps MD on various health topics. |
| PreventDisease.com: A patient-oriented portal for up-to-date health information on fitness, lifestyle, nutrition and health tools. |
| RJ's Medical Directory: A collection of medical links and information categorized by specific topics. |
| South African Health Information: Reviewed, evidence-based health information based on the South African health system. |
| Talk Medical: Offers information on diseases, disorders, medications, parenting, and pregnancy. Also contains a searchable medical dictionary. |
| The Doctors Page: Links to patient education materials, medical reference sites and medical humor. |
| The Homeless Handbook: An online manual designed to assist support workers of homeless and similarly disadvantaged people who find themselves in medically challenging situations. |
| The Merck Manual: Online version of The Merck Manual of Diagnosis and Therapy. |
| TheMediweb: Provides a medical dictionary of health information for research and education for health care professionals, academics and the general public. |
| Virtual Hospital: A digital health sciences library at the University of Iowa for health care providers and patients. |
| Virtual Naval Hospital: A digital library designed to help primary care providers and to help patients associated with naval medical issues. A service of the U.S. Navy Bureau of Medicine and Surgery. |
| Well-Connected: Offering over 100 in-depth reports on physical and mental diseases and wellness issues. Written by medical writers and reviewed by a board at Harvard Medical School. Some information available free but most requires paid access. |