Is it possible that circumcision (removal of the foreskin) can cause a decrease in a man’s fertility over a man who has never been circumcised, all other factors being the same? Especially when one’s sperm comes from the testicles and not the penis. Is some degree of infertility connected to circumcision?
The research on circumcision on sperm quality and quantity has been under debate for some time. It appears that the medical community that profits from circumcision feels it won’t affect male fertility. Some in the medical community, researchers, and everyday people believe that it does. It appears that the verdict is split.
However, birth rates are much higher in countries where the men are predominantly uncircumcised. How is it possible that circumcision could affect fertility in the male?
The testicles hang outside of the body because sperm are very temperature sensitive. They have to be cooler than normal body temperature to survive. It is known that men have a higher quantity and quality of sperm in the colder months than in the warmer months. So men are most potent in the colder months. It is believed that in the hotter months, the sperm are damaged due to hot temperatures building up in a man’s underwear and, basically, cooking some of the sperm. This is why boxers are preferred over conventional underwear for sperm health. With tight underwear, the testicles are forced closer to the body. This damages the sperm from the elevated temperature of being up against the body.
So we understand that sperm are very temperature sensitive.
Now here’s where it gets interesting:
Circumcised men have a significantly higher resting temperature of their penises then men who are uncircumcised. Men who are uncircumcised have cooler penises than men who are circumcised. When either group becomes aroused, their penis temperatures rise to the same temperature.
There is no question that an uncircumcised man has a cooler penis than a circumcised man in the flaccid state. For some reason, removal of the foreskin is the reason for this. There seems to be some sort of temperature sensor in the foreskin that may control penile temperature. Removing the foreskin gets rid of this sensor.
It only takes a few temperature degrees of difference to damage sperm. As the penis is in close proximity to the testicles, it’s quite likely that a cooler penis would help keep the testicles cooler (Remember that men are more potent in the colder months of the year). Under these condition, if the testicles got too cold, they can always be retracted…