The American Cancer Society (ACS) conducts educational programs and offers many services to people with cancer and to their families. Staff at the toll-free numbers have information about services and activities in local areas and can provide referrals to local ACS divisions.

Breastcancer.org is a Web site dedicated to helping women understand breast cancer and make good decisions about their treatment. This site provides information from medical professionals on all aspects of breast cancer, from screening and surgery to sex and intimacy. The site also offers links to chat rooms, discussion boards, and "Ask the Expert" online conferences.

The National Cancer Institute (NCI) is a U.S. government agency that provides up-to-date information about the prevention, detection, and treatment of cancer. NCI also offers supportive care to people who have cancer and to their families. NCI information is also available to doctors, nurses, and other health professionals. NCI provides the latest information about clinical trials. The Cancer Information Service, a service of NCI, has trained staff members available to answer questions and send free publications. Spanish-speaking staff members are also available.

The National Lymphedema Network (NLN) provides education and guidance to people with lymphedema, health professionals, and the general public. The NLN provides information on the prevention and management of primary and secondary lymphedema and supports research to find causes and treatments for lymphedema.