The American Thyroid Association (ATA), founded in 1923 as the American Goiter Association, is a nonprofit professional medical society comprised of physicians and scientists dedicated to enhancing the understanding of thyroid physiology and pathophysiology, improving diagnosis and treatment of thyroid diseases, and promoting the education of physicians, patients, and the public about thyroid disorders.

The Endocrine Society is the world's largest and most active professional organization of endocrinologists. The mission of the Endocrine Society is to promote the understanding of hormonal communication at the molecular, cellular, and systems levels to prevent, diagnose, and treat disease and to improve the quality of life. For more information, or for a list of endocrinologists in your area, contact the Endocrine Society at the address or phone number shown above.

The National Graves' Disease Foundation is an organization comprising people with Graves' disease, the families of those affected by Graves' disease, and physicians and other professionals. The organization aims to establish support groups for members in all states; to foster public awareness of and education on the causes, effects, and treatment of Graves' disease; and to participate in research on Graves' disease. An annual national conference for patients and family members features experts in many related fields. All conferences are audiotaped and videotaped and maintained in a tape library.

Thyroid Cancer Survivors' Association, Inc. is an all-volunteer, nonprofit organization dedicated to support, communication, and education for thyroid cancer survivors, their families, and their friends.

The Thyroid Foundation of America (TFA) provides health education and support to thyroid patients, their families, and health professionals who care for them. Most thyroid problems are lifelong and often change over time, so TFA members are kept up to date through quarterly newsletters. TFA refers patients to thyroid specialists and to interest or support groups around the country, promotes public awareness of thyroid problems, and, if funding permits, sponsors special projects and research.