Male infertility can be caused by low sperm production abnormal sperm function or blockages that prevent the delivery of sperm illnesses injuries chronic health problems lifestyle choices and other factors may contribute to male infertility. Male infertility means a man is not able to start a pregnancy with his female partner male infertility can have many causes you may not make enough sperm or healthy sperm you may have a genetic problem like cystic fibrosis. Male infertility is any health issue in a man that lowers the chances of his female partner getting pregnant about 13 out of 100 couples cant get pregnant with unprotected sex there are many causes for infertility in men and women in over a third of infertility cases the problem is with the man. The causes of male infertility are very numerous and are not always easy to determine in some cases infertility can result from obstruction of the male genital tract or injury in other cases it could come from an insufficient number of spermatozoa a reduced motility of the spermatozoa or the abnormal form of these spermatozoa azoospermia azoospermia is the absence of spermatozoa in the