Sterilisation
Male sterilisation (vasectomy) is a permanent method of contraception that's carried out on a man.
During a minor operation, the tubes that carry sperm from a man's testicles to the penis are cut, blocked or sealed with heat. It's usually carried out under local anaesthetic, and takes about 15 minutes. There is no known side effects on a man's hormones or pleasure from having a vasectomy.
Female sterilisation involves an operation that permanently prevents a woman from being able to get pregnant. It's usually carried out under general anaesthetic, and involves blocking or sealing the fallopian tubes. This is more complicated than a vasectomy.