A new male contraceptive is shaking up global conversations around reproductive health--and its potential could be felt in ...

But many sperms in a human ejaculate are markedly different in shape. Common defects include rounded, tapered, lumpy, double, undersized or oversized heads, midpieces that are too small or too ...

Competition among sperm cells is fierce – they all want to reach the egg cell first to fertilize it. A research team from Berlin now shows in mice that the ability of sperm to move progressively ...

Now, a new study shows that even though the fastest and most capable sperms reach the ovum first, it is the egg that has the final say on which sperm fertilizes it.

Side Effects of Not Releasing Sperms Daily - Sperm cells slowly move along the tube, vas deferens, after maturing in the testicles. At the end of this tube, they wait at the prostate.

Like women, men's fertility also gradually decreases with age, especially after the age of 40. After this age, both the ...

Brenda ‘harvested’ the sperms, but she does not know what to do with them yet. “That man is very careful so I read online that I can still use sperms from a used condom.