A woman from Northamptonshire has become one of a growing number of people to donate a kidney to a total stranger.
Teresa Dobson, 57, from Broughton, Northamptonshire, is recovering from the operation which she had a few weeks ago.
Teresa says it was a big decision and not one which she took lightly. It involved major surgery but she was motivated by the possibility of saving someone's life.
She feels she has also benefited from the whole process. She said: "Altruism is a very difficult word. It means being totally selfless and I'm not sure that that exists. Most acts, however selfless they may appear, that person who's doing it actually gets something back. I've done this and I will take that through with me for the rest of my life - and that's a really good feeling!"
- Click below to watch a video report by ITV News Anglia's Lauren Hall
She was supported by the Give a Kidney charity which raises awareness of altruistic kidney donation. Since it was set up a few years ago, it has helped nearly 250 people to donate a kidney.