In this Article
Is infertility a common problem?
Is infertility just a woman's problem?
No, infertility is not always a woman's problem. Both women and men can have problems that cause infertility. About one-third of infertility cases are caused by women's problems. Another one third of fertility problems are due to the man. The other cases are caused by a mixture of male and female problems or by unknown problems.
What causes infertility in men?
Infertility in men is most often caused by:
Sometimes a man is born with the problems that affect his sperm. Other times problems start later in life due to illness or injury. For example, cystic fibrosis often causes infertility in men.
What increases a man's risk of infertility?
A man's sperm can be changed by his overall health and lifestyle. Some things that may reduce the health or number of sperm include:
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