Infertility
Infertility is the condition of being unable to reproduce sexually. There are a great many different physiological problems, both male and female, that can cause this type of problem. Some of these problems can be treated medically and some cannot. This problem can be a source of great emotional distress for some individuals and this is a cause for the use of in vitro fertilization, adoption, and surrogacy to complete a couple's (or individual's) desire to become parents.