The World Health Organization standardizes 20 million sperms per milliliter of semen sample, as the normal sperm count. A number below this threshold results in infertility.
There are a number of defects associated with sperms. Given below are the same:
Oligospermia: Condition characterized by decreased number of sperms in the given semen sample. Typically lesser that 20 million sperms/ml of semen. This condition can be overcome with the help of medications or following patterns; by identifying ovulation and not involving in ejaculation 2-3 days before the scheduled intercourse.
Azoospermia: Condition in which the semen sample has no sperms present in it. This complete absence of sperms might be due to blockage, lifestyle, genetics, illness etc. Identifying the cause of it could be one step forward in beginning the treatment.
Athenozoospermia: Condition characterized by lower motility of sperms. It is one of the most important factors for fertilization, since the sperm has to swim forward and reach the egg in order to fertilize it.
Teratozoospermia: This condition is the defect in the size and shape of the sperm (morphology). A normal, head-mid piece – tail are required for the sperm to move towards the egg and fertilize it. Any defect in it causes infertility in the man.
Necrozoospermia: The condition in which the semen sample contains dead and immobile sperms.