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Causes Of Infertility In a Man
Abnormal Semen

Abnormal semen is responsible for about 75% of all cases of male infertility. The following may cause semen to be abnormal.

  • Testicular infection.
  • Testicular cancer.
  • Testicular surgery.
  • Overheating the testicles. 
  • Ejaculation disorders. 
  • Varicocoele.
  • Undescended testis. 
  • Hypogonadism.
  • Genetic abnormality.
  • Mumps.
  • Hypospadias. 
  • Cystic fibrosis.
  • Radiotherapy.
Other diseases 
  • Anaemia.
  • Cushing's syndrome.
  • Diabetes.
  • Thyroid disease Medications.
  • Sulfasalazine.
  • Anabolic steroids.
  • Chemotherapy.
  • Illegal drugs - marijuana and cocaine.