Men's health (includes Gay men's health issues)

Go Ask Alice Columbia University's online question and answer service.

General Men's Health

Men's Health
CDC: Men's Health Topics
Medline Plus: Men's Health Topics; see also Gay/Lesbian Health
Men's Health Network

Birth Control & Contraception

Association of Reproductive Health Professionals Comprehensive site, including interactive programs for Choosing a Birth Control Method and Test Your Contraceptive Knowledge.
Contraception for Men Only

Depression

DRADA: Depression and Related Affective Disorders Association
NDMDA: National Depressive and Manic-Depressive Associations

Eating Disorders

Harvard Eating Disorders Center
John Hopkins Eating Disorders
Medline Plus: Eating Disorders
National Eating Disorders Association

HIV/AIDS

The Body: An Aids and HIV Information Resource
CDC Divisions of HIV/AIDS Prevention
GMHC: Gay Men's Health Crisis
GMHC: HIV and AIDS Information
John Hopkins AIDS Service
Medline Plus: AIDS (includes research at Bastyr University in alternative therapies)

Sexually-Transmitted Diseases

CDC:Division of Sexually Transmitted Diseases
Medline Plus: Sexually Transmitted Diseases; includes interactive tutorial

Testicular Cancer

Medline Plus: Testicular Cancer
Plainsense: Testicular Cancer