Male Factor Infertility
Causes of infertility in men include:
low sperm count (oligospermia)
problems with sperm movement (motility, asthenospermia) or shape (morphology, teratospermia)
no sperm in the semen (azoospermia)
difficulty ejaculating caused by spinal cord injury
These conditions may be caused by damage to the testicles or a blockage in the reproductive tract (including vasectomy or failed reversal of vasectomy). Infertility can also be caused by illness (including endocrine disorders), infections, injury, previous hernia repair, or a childhood history of undescended testicles. Timing and frequency of intercourse may be a factor. Fertility can also be affected by use of lubricants, certain medications, recreational drugs, smoking, or steroids. Exposure to chemicals or radiation can affect fertility in a man.
problems with sperm movement (motility, asthenospermia) or shape (morphology, teratospermia)
no sperm in the semen (azoospermia)
difficulty ejaculating caused by spinal cord injury
These conditions may be caused by damage to the testicles or a blockage in the reproductive tract (including vasectomy or failed reversal of vasectomy). Infertility can also be caused by illness (including endocrine disorders), infections, injury, previous hernia repair, or a childhood history of undescended testicles. Timing and frequency of intercourse may be a factor. Fertility can also be affected by use of lubricants, certain medications, recreational drugs, smoking, or steroids. Exposure to chemicals or radiation can affect fertility in a man.
About 20% of male infertility is caused by azoospermia. There are two categories of azoospermia: