Vasectomy - how does it work and how reliable is it?

Dr Louisa Draper

"Vasectomy is very effective - figures suggest up to 99 per cent. This means that from 2,000 men who have the operation, only one will ever get a woman pregnant at any point afterwards. "

Dr Louisa Draper

Vasectomy is a straightforward procedure carried out to permanently sterilise men by preventing the release of sperm when they ejaculate.  The vas deferens (tubes which carry sperm from the testicles) are sealed to stop the sperm mixing with semen. Vasectomy is a very popular method of contraception, although in the UK there’s been a dramatic fall in the number of men who have the operation. At the start of the  21st century, the NHS carried out around 40,000 vasectomies every year but the number had dropped to around 15,000 by 2014.