How Common Is Hyperthyroidism?

Topic Overview

Hyperthyroidism :

  • Can occur at any age but rarely affects children.
  • Affects women more often than men.

Graves' disease , the most common cause of hyperthyroidism:1

  • Occurs in about 1 or 2 out of 100 women.
  • Affects up to 10 times more women than men.
  • Is most common in people between ages 20 and 50.

Related Information



  1. Jameson JL, Weetman AP (2008). Hypothyroidism section of Disorders of the thyroid gland. In AS Fauci et al., eds., Harrison's Principles of Internal Medicine, 17th ed., vol. 2, pp. 2224–2237. New York: McGraw-Hill.


Author Judy Dundas
Editor Susan Van Houten, RN, BSN, MBA
Associate Editor Pat Truman, MATC
Primary Medical Reviewer E. Gregory Thompson, MD - Internal Medicine
Specialist Medical Reviewer Matthew I. Kim, MD - Endocrinology & Metabolism
Last Updated November 4, 2009

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