American Congress of Obstetricians and Gynecologists (ACOG) is a nonprofit organization of professionals who provide health care for women, including teens. The ACOG Resource Center publishes manuals and patient education materials. The Web publications section of the site has patient education pamphlets on many women's health topics, including reproductive health, breast-feeding, violence, and quitting smoking.

The American Fertility Association is a national nonprofit organization that helps women and men facing decisions related to family building and reproductive health—from prevention and treatment of infertility to social and psychological concerns. The mission of AFA is to serve as a lifetime resource for men and women who need reproductive information and support and to forward the causes of adoption and reproductive health through advocacy, education, awareness building, and research funding.

The National Institute of Child Health and Human Development (NICHD) is part of the U.S. National Institutes of Health. The NICHD conducts and supports research related to the health of children, adults, and families. NICHD has information on its Web site about many health topics. And you can send specific requests to information specialists.

The National Women's Health Information Center (NWHIC) is a service of the U.S. Department of Health and Human Services Office on Women's Health. NWHIC provides women's health information to a variety of audiences, including consumers, health professionals, and researchers.

The Polycystic Ovarian Syndrome Association (PCOSA) provides a central and comprehensive set of resources for information on polycystic ovary syndrome (PCOS). PCOSA also provides an advocacy network, including social support, for women with PCOS and for their families.