Men ejaculate tens of millions of sperm at a time, of which less than one in ten thousand can go through the vagina, cervix, reach the uterus, and then wait for fertilization in the fallopian tube. In the end, only one sperm can combine with the egg and develop into a fetus. In this [one in a million] competition, it is very difficult for men to conceive children smoothly if their sperm count is small, their vitality is poor and they have many deformities. This kind of sperm (semen) problem, which leads to male infertility, is called “oligospermia”, “asthenospermia” and “malformation”. Which semen problems can cause male infertility? Causes of male infertility related to semen quality include: Low sperm count Read More …