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How many people are affected by or at risk for congenital adrenal hyperplasia (CAH)?

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Classic CAH occurs in about one of every 15,000 births worldwide.1

Nonclassic CAH is among the most common genetic disorders. It occurs in about one of every 1,000 people, but could occur in as many as 1 in 20 people in some communities.2 It is more common in Ashkenazi Jews, Hispanics, Italians, and Yugoslavians.3


  1. National Adrenal Diseases Foundation. (n.d.). CAH: Diagnosis. Retrieved April 25, 2012, from http://www.nadf.us/adrenal-diseases/congenital-adrenal-hyperplasia-cah/ External Web Site Policy [top]
  2. National Adrenal Diseases Foundation. (n.d.). CAH: Nonclassical. Retrieved April 25, 2012, from http://www.nadf.us/adrenal-diseases/congenital-adrenal-hyperplasia-cah/ External Web Site Policy [top]
  3. NIH Clinical Center. (n.d.). Patient education: Facts about CAH. Retrieved April 25, 2012, from http://www.cc.nih.gov/ccc/patient_education/pepubs/cah.pdf (PDF - 752 KB) [top]

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