Many men discover one day that their testicles are not perfectly symmetrical. One can hang a little lower, look slightly larger or be placed differently in the scrotum. In the majority of cases, a small asymmetry is normal.
This question is sometimes mixed with amazing stories about eunuchs, testosterone and longevity. These researches are scientifically interesting, but it should not lead to the idea that a decrease in sex hormones would be a health strategy.
Why are we talking about castration and longevity?
Some historical studies have observed that castrated men groups seemed to live longer than comparable men of their time. Work on Joseon dynasty eunuchs in Korea has fueled this discussion.
Animal research has also shown that sex hormones can influence some biological markers of aging. Experiments in sheep, for example, have studied epigenetic differences between castrated and uncastrated animals.
These observations do not prove that removing the testicles «makes it live longer» in modern humans. Historical studies are exposed to many confusion factors: living conditions, social status, access to resources and causes of mortality very different from those of today.
Above all, castration has major medical consequences linked to the fall of androgens. It obviously has no place as a method of preventing aging in a healthy person.
Why aren't the two testicles exactly the same?
The human body is not perfectly symmetrical. It is common for one testicle to be slightly lower than the other. This arrangement can also limit contact between them when walking or moving.
A small size difference may also exist. What matters more is your own usual state. A testicle that has always been slightly larger does not have the same meaning as a testicle that suddenly increases in volume.
It is difficult to accurately assess the size by eye or with fingers. When a doctor needs to measure it, they can use an orchidometer or ultrasound depending on the situation.
Does the size of the testicles change with age?
The testicles develop strongly during puberty. In adulthood, their volume varies from man to man and it does not have to correspond exactly to a unique value to be normal.
With age, hormonal and tissue changes can gradually change their volume. Certain diseases, treatments or testicular diseases can also cause a decrease or increase.
This is why an isolated number found on the Internet does not allow you to assess your health. Examination, symptoms and progress over time are more important.
Do larger testicles mean more sexual performance?
No. The size of the testicles is not a virility score or a direct indicator of the quality of erections or pleasure given to a partner.
The testicles produce sperm and hormones, but their outward appearance does not allow a person to simply deduce testosterone levels. A man with normal but rather small testicles may have normal hormonal concentrations.
Conversely, a significant swelling is not an advantage. It may correspond to a hydrocele, inflammation, varicocele, mass or other problem that requires examination.
What is the visible line in the middle of the scrotum?
The line that descends to the center of the scrotum is called the scrotal raphe. It is part of normal anatomy and results from embryonic development.
It can be more or less visible depending on the person and extends towards the perineum. His presence is not a sign of a scar or an old wound.
This anatomical structure also serves as a benchmark for professionals during certain examinations or surgical procedures.
What changes should be considered?
A stable and old asymmetry is generally less of a concern than a recent change. See if you notice:
- a sudden increase in the volume of a testicle or scrotum; ;
- a hard nodule or a new mass; ;
- persistent heaviness; ;
- a pain that does not disappear; ;
- a testicle that has not descended into the scrotum; ;
- a significant and recent decrease in volume; ;
- A change associated with infertility or other hormonal symptoms.
Sudden pain: emergency
Sudden and intense testicular pain, especially with nausea or a testicular that seems to have risen, may correspond to a testicular torsion. It is a medical emergency: you have to consult immediately and not wait for the pain to pass alone.
How to monitor without becoming anxious?
You don't need to measure your testicles every week. The goal is simply to know their usual aspect in order to notice a clear change.
Under a hot shower, the scrotum is more relaxed and it may be easier to feel each testicle gently. A flexible structure located behind and above the testicle corresponds in particular to the epididymis and should not be automatically confused with a mass.
If you feel something new and don't know what it is, have it examined rather than comparing photographs online.
What hormone studies actually teach us
Research on the longevity of eunuchs or on neutered animals shows above all that sex hormones have effects in many tissues beyond reproduction. They can influence metabolism, bones, muscles and some biological mechanisms associated with aging.
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They do not transform castration into a «longevity trick». In humans, preserving their health goes through much more concrete factors: not smoking, moving regularly, getting enough sleep, treating hypertension or diabetes and consulting when a testicular change appears.
A slightly higher, lower or slightly different testis is usually a normal variation. It is above all the pain, the masses and the rapid changes that deserve your attention.
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