Causes Of Infertility in Men are due to low sperm counts.

Causes of Infertility in Male

More than 90% of male infertility cases are due to low sperm counts, poor sperm quality, or both. The remaining cases of male infertility can be caused by a range of conditions including anatomical problems, hormonal imbalances, and genetic defects.

Sperm Abnormalities

Sperm abnormalities are a critical factor in male infertility. These abnormalities include:

  • Low sperm count
  • Poor sperm motility (movement)
  • Abnormal sperm shape

Risk Factors

Risk factors for male infertility include:

  • Varicocele, an enlarged varicose vein in the spermatic cord that connects to the testicle
  • Aging, which can reduce sperm counts and motility and decrease the genetic quality of sperm
  • Sexually transmitted diseases, which can cause scarring in the male reproductive system or impair sperm function
  • Lifestyle factors such as smoking and substance abuse
  • Long-term or intensive exposure to certain types of chemicals, toxins, or medications


In addition to a medical history and physical exam, specific tests for male infertility include:

  • Semen analysis to evaluate the quantity and quality of sperm
  • Blood tests to evaluate hormone levels
  • Imaging tests to look for structural problems
  • Genetic testing to identify sperm DNA fragmentation, chromosomal defects, or genetic diseases

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