Diagnosis can involve a medical history from the man and a physical examination along with a semen analysis to check the number, shape and movement of sperm in the ejaculate.Blood tests may also be done to check the levels of hormones that control sperm production.
The brain plays an important part in the control of the male reproductive system.
The pituitary gland and the hypothalamus, located at the base of the brain, control the production of male hormones and sperm.
However, only about one in every 100 men has no sperm in his ejaculate.
In most cases, there are no obvious signs of infertility.
A man’s fertility generally relies on the quantity and quality of his sperm.
If the number of sperm a man ejaculates is low or if the sperm are of a poor quality, it will be difficult, and sometimes impossible, for him to cause a pregnancy.
Intracytoplasmic sperm injection (ICSI) is a form of IVF where a single sperm is placed directly into each egg by piercing the outer covering of the egg.
ICSI is particularly helpful for men with poor sperm production.
If a couple has been trying for a pregnancy without success, they should go to their local doctor, family planning clinic or women’s health clinic, and have some initial tests.