Causes for infertility: understanding where things can go wrong
The causes for infertility can be broken down into several categories.
- Coital problems. Some couples are unable to have intercourse or have it at the wrong time of the month.
- Sperm problems. Some men have low sperm counts or a low percentage of swimming or normally shaped sperm.
- Ovulation issues. Some women do not release eggs, release them infrequently, or don't produce enough hormones to hold on to the pregnancy.
- Tubal issues. Some women have blocked or damaged fallopian tubes. Others have a condition called endometriosis that has been associated with infertility.
- Poor ovarian reserve. Some women have lower numbers of eggs and/or poor quality eggs, making a genetically normal conception less likely.