After a vasectomy, sperm are still produced by the testicles but cannot travel through the vas deferens because these tubes are cut or blocked during the procedure. As a result, sperm do not enter the semen or leave the body during ejaculation. Instead, the sperm are absorbed and broken down by the body, primarily in the epididymis, where they dissolve and are recycled. This is a natural and harmless process similar to how the body reabsorbs other cells, such as blood cells after an injury

. The testes continue to produce sperm continuously, but since the pathway is blocked, the sperm accumulate temporarily in the epididymis and vas deferens below the site of the vasectomy. These sperm typically live for about 3 to 5 days before being reabsorbed by the body. This ongoing cycle of sperm production and reabsorption continues indefinitely after the procedure

. Ejaculation after vasectomy remains largely unchanged in volume and appearance because semen is mostly made up of fluid from glands other than the testes. The only difference is the absence of sperm in the ejaculate, which makes pregnancy extremely unlikely

. In summary, sperm after vasectomy are trapped in the reproductive tract and naturally absorbed by the body without causing harm or affecting sexual function.