Infertility is usually defined as not being able to get pregnant after 12 months of unprotected sexual intercourse. A broader view of infertility includes not being able to carry a pregnancy to term.
There are many causes of infertility. For about 4 couples in 10 it will relate to a sperm problem. In another 4 couples in 10 there will be a female reproductive cause. Sometimes there is a combination of factors.
If you are female, your fertility may depend on:
- your age
- if you have any problems with your fallopian tubes
- if you have endometriosis or an ovulation problem
- any fibroids
- pelvic inflammatory disease or sexually transmitted infections (STI).
Adult males may be affected by:
- problems with the tubes connected to the testes
- low sperm production
- high numbers of abnormal sperm
- genetic problems
- problems with sperm DNA.
Follow the links below to find trusted information about infertility.
Last reviewed: July 2016