How does Down syndrome affect fertility?

Updated: Apr 30, 2018
  • Author: Gratias Tom Mundakel, MBBS, DCH; Chief Editor: Maria Descartes, MD  more...
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Answer

Affected individuals rarely reproduce. About 15-30% of females with trisomy 21 are fertile and have up to a 50% risk of having child also affected with trisomy 21. Infertility in males has been attributed to defective spermatogenesis, but ignorance of the sexual act may be one of the contributing factors.


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