Why are the two testicles different in size?

Many men will have different testicles during development, but many men think that it will not affect them, because it will not cause any pain. Therefore, many male friends do not take it seriously. However, different testicles do not mean that there is no problem with the body. Let's introduce to you what is the reason for different testicles.

The male testicles may be influenced by their primitive tissues. They are initially formed in the upper part near the liver, that is, behind the peritoneum, next to the 2nd to 3rd lumbar vertebrae, and then develop into gonads. Male testicles are in the abdominal cavity for most of the embryonic development process. As the male fetus gradually develops, the testicles will descend. The male testicles move farther downward, even leaving the body and falling into the scrotum, and only descend into the scrotum after the embryo develops to 30 weeks. This feature is very important for producing healthy sperm. One of the reasons is that humans are warm-blooded animals, but sperm of large quantity and good quality must be produced in an environment 2 to 3 degrees Celsius below body temperature. In other words, the human scrotum is a sac separated from the body that can control the growth temperature of the sperm inside.

However, this also brings a problem. Because the testicles have to move a long distance to fall into the scrotum, the spermatic cord also makes a big circle. Unfortunately, this will cause the body wall above the spermatic cord to become thinner. In the process of the testicles descending toward the scrotum, the peritoneum attached to the surface of the testicles also descends with the testicles, forming an eggplant-shaped bag. The lower part of the bag becomes the testicular sac shortly after the baby is born, and the rest of the bag shrinks and closes by itself, leaving a fiber cord. If the upper part of the bag is not closed or closed incompletely, the bag will communicate with the abdominal cavity. If a section of the small intestine pokes out from there and enters the bag, it will cause a hernia.

Through the above article, you can understand that it is normal for normal male testicles to be different in size. Friends, don't be too nervous when the testicles on both sides are different in size. You can refer to the size of normal male testicles to measure your own testicles and see if your testicles are normal.