Asthenozoospermia is one of the factors of male infertility. It’s characterized by the reduction of sperm vitality. The decrease of the movement of sperm will reduce the possibility for sperm to meet egg. That’s why the function of reproductive system of a sthenozoospermia patients is abnormal. In order to prevent this disease, it’s necessary to know the causes. Causes of Asthenozoospermia 1. Abnormal sperm liquefaction The viscosity of the sperm can lead to male infertility. If the sperm can’t normally liquefy, the motion ability of sperm will be influenced. Slender fibrous protein and mutual reticulocyte are visible in Non-liquefied semen of the seminal plasma, which can reduce the space for sperm activity and tie down the movement of sperm. 2. Inflammation Acute or chronic inflammatory diseases of reproductive tract, including epididymis, prostate, seminal vesicle, sperm duct, can reduce the vitality of sperm. The inflammation causes are...