The third in the Cycle Without Damage series, and today we are talking about the testicles.

Many notice partial testicular shrinkage during cycles, especially the longer ones, in one or both testicles. On top of that, some people see their semen quality damaged after cycles.

This shrinkage usually goes away after the cycle and they return to their normal size. But be careful: that is not proof that everything came back fine on its own. The return depends on how it was handled, and sometimes the recovery is incomplete.

***Source 1

Why? Because the shrinkage that happens on cycle starts as primary shrinkage. And primary shrinkage, if it continues for a long period, turns into total shrinkage — after which the testicle cannot return, and at that point it permanently loses part of its function. And even when it does return, it will not necessarily return 100%; it may come back to a fraction of its former size and have lost the rest permanently. This is one of the reasons longer cycles are more dangerous.

***Source 2

The ultimate, safest solution is for it not to be exposed to shrinkage in the first place. For that, the testicle needs to receive LH and FSH steadily — at concentrations close to what a normal man is exposed to, not in sudden, large doses. This idea of steadiness matters because the body is wired for a daily rhythm, and it is the violent swing in concentration (spiking up, crashing down) that causes problems. The choice of what, how much, and when is a doctor's decision with labs — not something you tune by guesswork.

***Source 3

And this subject is not only important for preventing testicular shrinkage; more importantly, it protects semen quality. Because not exposing the testicle to FSH for long periods negatively affects the cells responsible for producing sperm. Unfortunately everyone focuses on the testosterone-producing cells and forgets the other half of the cells — which is exactly the half that determines your fertility.

***Source 4

The bottom line: fertility is not something to play with through personal guesswork, and not everything that returns in size returns in full. Any decision here must be based on a semen analysis and hormone bloodwork, and with a doctor. The sources are below, one per paragraph, if you want more detail.

And say a quick prayer for me, quietly to yourself, if you finished the article and it helped you.

Adel