What Happens to Sperm After Vasectomy?

After a vasectomy (Vasectomy), the testicles continue to produce sperm, but the pathway for sperm to leave and enter the semen has been blocked; for this reason, pregnancy does not occur. Below, we explain the vasectomy process, its effect on sperm production, and what happens to sperm after the procedure in more detail.

In general, after sperm are produced in the testicles, they enter the epididymis and mature there over several days to several weeks so they can fertilize an egg. The epididymis is a narrow, coiled tube behind each testicle, and its main role is to store, mature, and transport sperm before they leave the body.

After vasectomy, the path through the vas deferens, the tubes that carry sperm from the testicles to the ejaculatory ducts, is cut or blocked. However, the testicles continue to produce sperm after the procedure. These sperm remain for a while inside the testicle and epididymis (Epididymis), and are then absorbed by the body.

In fact, immune cells break down the sperm, and their components return to the body's metabolic cycle, just like what happens to many other dead cells in the body. This process is normal and usually does not cause pain or inflammation.

Sperm remaining in the testicles is not dangerous. In rare cases, however, mild inflammation or a granuloma, a small inflammatory lump caused by accumulated sperm, may develop and can be treated. If pain, swelling, or persistent changes in the testicle occur, it is best to see a urologist.

In addition, it is recommended to use another method of birth control for some time after vasectomy until the pathway has been confirmed to be fully cleared, because a small amount of sperm may still remain in the vas deferens.