Vasectomy is a surgical procedure used as a method of male contraception. It involves cutting and sealing the vas deferens, the tubes that carry sperm from the testicles to the urethra, thereby preventing sperm from reaching the ejaculate. This procedure is highly effective, permanent, and is considered one of the most reliable forms of birth control. Vasectomies are usually done under local anesthesia, and most men can return to their normal activities within a few days. While it does not affect sexual function or hormone levels, it’s important to note that it does not provide immediate protection against pregnancy until residual sperm are cleared from the system, which may take several months.