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.
The number and quality of a man’s sperm can be affected by his overall health and lifestyle. Some things that may reduce sperm number and/or quality include:
Many things can affect a woman’s ability to have a baby. These include:
More and more women are waiting until their 30s and 40s to have children. Actually, about 20 percent of women in the United States now have their first child after age 35. So age is an increasingly common cause of fertility problems. About one third of couples in which the woman is over 35 have fertility problems.
Aging decreases a woman’s chances of having a baby in the following ways:
Most healthy women under the age of 30 shouldn’t worry about infertility unless they’ve been trying to get pregnant for at least a year. At this point, women should talk to their doctors about a fertility evaluation. Men should also talk to their doctors if this much time has passed.
In some cases, women should talk to their doctors sooner. Women in their 30s who’ve been trying to get pregnant for six months should speak to their doctors as soon as possible. A woman’s chances of having a baby decrease rapidly every year after the age of 30. So getting a complete and timely fertility evaluation is especially important. Some health issues also increase the risk of fertility problems.
So women with the following issues should speak to their doctors as soon as possible:
No matter how old you are, it’s always a good idea to talk to a doctor before you start trying to get pregnant. Doctors can help you prepare your body for a healthy baby. They can also answer questions on fertility and give tips on conceiving.
Sometimes doctors can find the cause of a couple’s infertility by doing a complete fertility evaluation. This process usually begins with physical exams and health and sexual histories. If there are no obvious problems, like poorly timed intercourse or absence of ovulation, tests will be needed.
For a man, doctors usually begin by testing his semen. They look at the number, shape, and movement of the sperm.
For a woman, the first step in testing is to find out if she is ovulating each month. There are several ways to do this. A woman can track her ovulation at home by:
Doctors nowadays check if a woman is ovulating by doing blood tests and an ultrasound of the ovaries. If the woman is ovulating normally, more tests are needed.