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What can cause a man to be infertile?

By Sara Salgado B.Sc., M.Sc. (embryologist).
Last Update: 10/26/2017

More than 90% of male infertility or sterility cases are caused by sperm abnormalities, including poor sperm quality, low sperm count, abnormal morphology, or a combination between all of them. Other causes that can affect a man's fertility are: anatomical problems, genetic defects, hormonal imbalances, etc.

See also: Male infertility: causes, symptoms, treatment and statistics.

 Sara Salgado
Sara Salgado
B.Sc., M.Sc.
Embryologist
Degree in Biochemistry and Molecular Biology from the University of the Basque Country (UPV/EHU). Master's Degree in Human Assisted Reproduction from the Complutense University of Madrid (UCM). Certificate of University Expert in Genetic Diagnosis Techniques from the University of Valencia (UV).
Embryologist. Degree in Biochemistry and Molecular Biology from the University of the Basque Country (UPV/EHU). Master's Degree in Human Assisted Reproduction from the Complutense University of Madrid (UCM). Certificate of University Expert in Genetic Diagnosis Techniques from the University of Valencia (UV).