STOPPING SPERM AT THE SOURCE
Male sterilization, also known as a vasectomy, is a permanent surgical contraceptive method. It involves cutting the tubes that carry sperm from the testes to the penis during ejaculation in a procedure that is done under local anesthetic. Since it is permanent and highly effective, it is an option for those who never want to have children, or who don't wish to have any more.
After the procedure, the man can still ejaculate, but the seminal fluid will not contain any sperm. Sterilization will only affect the man's fertility, and not his libido or his ability to have sex, but it's important to consult a doctor or nurse before making a decision. They will help you weigh the benefits and risks, and advise you on alternative long-acting methods of contraception such as the IUS or IUD. Sometimes it is possible to reverse a vasectomy, but the procedure is very complex, so there are no guarantees.