Below are some of the few potential cause for male infertility:

* Totally absence of any sperm (azoospermia)
* Decrease number of sperm count (oligospermia)
* Abnormally shaped sperm (teratozoospermia)
* Defects with sperm motion (asthenozoospermia)
* Sperm that is abnormally still (necrozoospermia); in these case the sperm is alive but is not moving, or on the other hand it may be dead.
* Problems with the way the sperm is being delivered, the cause maybe is due to sexual dysfunction, presence of obstruction, a previously done vasectomy, or retrograde ejaculation where the sperm does not exit but goes in the bladder.
* Erectile dysfunctions and other sexual problems

There are dozens of conditions that can caused male infertility. One of the most common cause of this is varicoceles.  It is a varicose vein that is located in the scrotum. This varicocele pools blood and casued a slight increase in temperature with in the scrotal sac, the spermatogenesis is heat sensitive causing a decrease in the amount of sperm produced and impairing a normal sperm mobility. Some go to the doctors and consult for professional help, they are often suggested to go laboratory work ups, take medications and men infertility supplement.