Vasectomy is a surgical method to obtain permanent male contraception.
It’s the testes that produce sperm. Before ejaculation, the sperm travel along the two vas deferens located in the scrotum to then mix with seminal fluid thus forming the “semen”. If there are no sperm in the seminal fluid, the egg cannot be fertilised and, consequently, a pregnancy cannot occur.
Vasectomy consists of a ligature and section of the vas deferens to prevent sperm from mixing with the seminal fluid. This procedure preserves ejaculation and does not cause impotence or erectile dysfunction since the vasectomy does not involve anything in the production of testosterone.
After a vasectomy, the seminal and prostate glands continue to produce the same amount of seminal fluid; therefore, at the time of ejaculation, the same volume of liquid is emitted, but the liquid no longer contains sperm. That is the only difference. As for the testicles, they continue to produce sperm, which are naturally destroyed by the body in the scrotum, as is the case for a non-vasectomised man in a period of sexual abstinence.