A:
Agency for Healthcare Research and Quality (AHRQ) - Provides evidence-based health care information, research findings, and data to help consumers, health providers, health insurers, researchers, and policymakers make informed health care decisions and improve the quality of health care services [Department of Health and Human Services (HHS), Agency for Healthcare Research and Quality]

Aging - Provides information about aging publication available for sale from the U.S. Government Bookstore [Government Printing Office]

Alcohol and Alcohol Problems Science Database (ETOH) - The most comprehensive online resource covering all aspects of alcohol abuse and alcoholism [Department of Health and Human Services (HHS), National Inst. of Health (NIH), National Institute on Alcohol Abuse and Alcoholism (NIAAA)]

Alzheimer's Disease Education and Referral (ADEAR) Center - Provides information about Alzheimer's disease, its impact on families and health professionals, and research into possible causes and cures [Department of Health and Human Services (HHS), National Inst. of Health (NIH), National Institute on Aging (NIA)]

B:
Bibliographies & Research Guides Listed by Subject - Bibliographies, guides, finding aids, produced by the Science Reference Section of the Library of Congress, and arranged by subject. [Library of Congress]

C:
Cancer - Protect Yourself from the Sun - Preventing Skin Cancer by protecting yourself from the Sun [Department of Health and Human Services (HHS), Centers for Disease Control and Prevention (CDC)]

Cochlear Implants - Explains a surgical procedure for people with severe-to-profound hearing loss. Site discusses risks and benefits, as well as safety issues and what happens before, during and after surgery. [Department of Health and Human Services (HHS), Food and Drug Administration (FDA)]

D:
DIRLINE (Directory of Information Resources Online) - Database of location and descriptive information about organizations, research resources, projects, and databases concerned with health and biomedicine [Department of Health and Human Services (HHS), National Inst. of Health (NIH), National Library of Medicine (NLM), Specialized Information Services (SIS)]

H:
Health Care - Provides information about health care publications available for sale from the U.S. Government Bookstore [Government Printing Office]

Health Services Technology Assessment Texts (HSTAT) - Provides access to full-text documents useful for providing health information and for health care decision making [Department of Health and Human Services (HHS), National Inst. of Health (NIH), National Library of Medicine (NLM), National Information Center on Health Services Research (NICHSR)]

Health and Human Development Information - Lists the A to Z health & human development topics from the National Institute of Child Health & Human Development (NICHD) [Department of Health and Human Services (HHS), National Inst. of Health (NIH)]

Healthfinder - Your guide to reliable health information [Department of Health and Human Services (HHS), National Inst. of Health (NIH), National Library of Medicine (NLM)]

I:
Immunization - Covers information on how the immune system works, immunization schedules, list of vaccines for preventable diseases, and related issues. [Department of Health and Human Services (HHS), National Inst. of Health (NIH), National Library of Medicine (NLM)]

L:
LOCATORPlus - Catalog of books, journals, and audiovisuals in the National Library of Medicine collections [Department of Health and Human Services (HHS), National Inst. of Health (NIH), National Library of Medicine (NLM)]

M:
MEDLINE/PubMed - Database with millions of references, primarily from MEDLINE, to journal articles in life sciences with a concentration on biomedicine [Department of Health and Human Services (HHS), National Inst. of Health (NIH), National Library of Medicine (NLM), National Center for Biotechnology Information (NCBI)]

Measure of Confidence - NIST and Quality in Health Care [Department of Commerce (DOC), National Institutes of Standards and Technology (NIST)]

MedlinePlus - Web site with authoritative consumer health information from NIH and others [Department of Health and Human Services (HHS), National Inst. of Health (NIH), National Library of Medicine (NLM)]

MedlinePlus Espanol - Spanish version of the Web site with authoritative consumer health information from NIH and others [Department of Health and Human Services (HHS), National Inst. of Health (NIH), National Library of Medicine (NLM)]

N:
NLM Gateway - A single Web interface that searches multiple National Library of Medicine databases [Department of Health and Human Services (HHS), National Inst. of Health (NIH), National Library of Medicine (NLM)]

National Center for Health Statistics (NCHS) - Provides a wide variety of data with which to monitor the Nation's health [Department of Health and Human Services (HHS), Centers for Disease Control and Prevention (CDC)]

National Guideline Clearinghouse (NGC) - A comprehensive database of evidence-based clinical practice guidelines and related documents [Department of Health and Human Services (HHS)]

National Institute on Drug Abuse (NIDA) - Information for scientific researchers as well as parents and teachers [Department of Health and Human Services (HHS), National Inst. of Health (NIH)]

Nutrition resources - Access to products about nutrition [Department of Commerce (DOC), National Technical Information Service (NTIS)]

P:
PandemicFlu.gov - The official U.S. government Web site for information on pandemic flu and avian influenza [Department of Health and Human Services (HHS), National Inst. of Health (NIH)]

PubMed Central - Digital archive of life sciences journal literature [Department of Health and Human Services (HHS), National Inst. of Health (NIH), National Library of Medicine (NLM), National Center for Biotechnology Information (NCBI)]

R:
Reports of the Surgeon General - Digitized collection of official reports, conference and workshop reports, and proceedings from the Office of the Surgeon General [Department of Health and Human Services (HHS), National Inst. of Health (NIH), National Library of Medicine (NLM)]

S:
Science Reference Service - Web site for Science Reference at the Library of Congress [Library of Congress]

Science Tracer Bullets - research guides that help you locate information on science and technology subjects. With brief introductions to the topics, lists of resources and strategies for finding more, they help you to stay on target. [Library of Congress]

T:
The Data Web - Data Ferret - Brings together under one umbrella demographic, economic, environmental, health, (and more) datasets that are usually separated by geography and/or organization [Department of Commerce (DOC), Bureau of the Census]

U:
Unified Medical Language System (UMLS) - Electronic Knowledge Sources and lexical programs that help health professionals and researchers retrieve and integrate electronic biomedical information from a variety of sources [Department of Health and Human Services (HHS), National Inst. of Health (NIH), National Library of Medicine (NLM), Lister Hill National Center for Biomedical Communications (LHNCBC)]

W:
Whole-Body CT Scanning - The scientific facts about the potential risks of undergoing a whole-body scan using computed tomography [Department of Health and Human Services (HHS), Food and Drug Administration (FDA)]