What is the average size of human male testicles

A group of Danish researchers looked at the connection between sperm quality, semen count, and testicle size. They found some evidence to suggest that poor sleep is associated with lower sperm counts.

The connection between testicle size and poor sleep was inconclusive. More evidence is needed to better understand the connection between testicles, sperm quality, and sleep. The researchers also noted that the men who reported frequent sleep disturbances tended to live unhealthier lives as well for example, by smoking, eating a diet high in fat, and other unhealthy features.

These lifestyle factors may play a greater role in sleep health than any other. If you have small testicles, you may be more likely to be an involved, nurturing parent. Researchers have noted evolutionary developments in other primates to underscore these findings. Male chimpanzees, for example, tend to have larger testicles and create a lot of sperm. Their focus seems more geared toward mating than protecting their young.

Male gorillas, on the other hand, tend to have smaller testicles and are quite protective of their offspring.

Researchers suggest that higher levels of testosterone, which is associated with larger testicles, may help steer some men toward behaviors other than the hands-on care of their children. The researchers also cited previous studies that found that fathers who are much more involved with the day-to-day care of their children tend to have lower testosterone levels. The idea is that being a nurturing father may actually lower your testosterone levels.

When it comes to the health and function of your genitals, size differences may be meaningless. One in particular is called male hypogonadism. Hypogonadism may be caused by a testicular disorder, such as the testicles not responding to signals from the brain to make enough testosterone and sperm.

This is called primary hypogonadism. Luteinizing hormone signals the testicles to make testosterone. Another cause of small testicles is varicocele. Varicocele is an enlargement of the veins within the scrotum, typically due to problems with the valves that control blood flow in the veins.

The bulging veins within the scrotum can cause the testicles to shrink and soften. Undescended testes can also cause small testicles. The study looked at activity in a part of the brain involved in paternal nurturing behavior. Participants with smaller testicles showed greater activation in this area when viewing pictures of their children, compared with those who had larger testicles.

Some males have lower testosterone levels than others. Doctors refer to unusually low testosterone levels as testosterone deficiency or male hypogonadism. Typical symptoms can include:. Hypogonadism may develop during puberty , and a doctor will usually treat the condition with testosterone replacement therapy.

Some males have smaller testicles as a result of Klinefelter syndrome. This results from being born with an extra X chromosome. The testicles start to grow to their full size during puberty. The growth stops when the testicles are fully developed. However, it is common for one testicle to be slightly smaller than the other. It is also common for one testicle to hang slightly lower than the other. Testicle size can fluctuate due to changes in temperature.

The size of the testicles may also decrease with age. Changes in temperature can temporarily cause the testicles to draw in closer or descend farther from the body. For example, the testicles may appear smaller when immersed in colder water. Once the body warms up again, the testicles generally return to their usual size. This is a natural occurrence — the testicles shrink and expand to keep the sperm at a constant temperature. As the body ages, the testicles grow smaller. The medical name for this is testicular atrophy TA.

TA tends to be a gradual process. Erection Rotations. Prostate Anatomy. Pelvic Tension Disorder. Prostatic Congestion. Triad of Prostate Symptoms. Prostate Cancer. Cowper's Gland Disorders. Seminal Vesicle Disorders. Sexual Fluids Semen. Semen Abnormalities. Pre-Ejaculate Fluid. Pre-Ejaculate Abnormalities.

Libido Desire Disorders. Premature Ejaculation. Delayed Ejaculation. Spontaneous Ejaculation. Painful Ejaculation. Wet Dreams Wet Dream Background. Wet Dream Frequency. Wet Dream Volumes. Wet Dream Abnormalities. Fertility Female Reproductive System. Headaches in Men. Mental Health in Men. Sexual Behavior Masturbation.

Sexual Activity. The study said that males with larger testicles were more inclined to extend their bloodline rather than caring for their children. The researcher even used MRIs to assess brain activity in the ventral tegmental area, which is linked with parental association.

Their finding: in men with smaller testicles, this area was activated more on seeing pictures of their kids. Of course, the study has some limitations: the study acknowledged some at the outset. For example, an argument can be made for nature versus nurture in forming parent-children bonds. If physiology - in this case, larger testicles - pulls men towards promiscuity and procreation, then cultural moors may exert a pull in the opposite direction, too. Men can sometimes notice the difference after a cold shower - the testicles seem to recede and then return to normal size after warming up.

Testicular size also decreases with age in a process called testicular atrophy. The change is gradual and is accompanied by a lower sex drive and reduced muscle mass. While these are normal bodily processes, there are some changes in the size of testicles that you should look out for. For instance, a sudden and painful change in the size of the testes could be caused by testicular torsion: a twisting of the spermatic cord that requires immediate medical attention to prevent further complications.

Trauma to the penis can also cause the testicles to shrink. Certain sexually transmitted infections such as syphilis and gonorrhoea may also cause the testicles to shrink.