Organ donation is the act of giving an organ to save or improve the life of someone who needs a transplant.
You are able to donate some organs while you are alive, for example; a kidney, or part of your liver. However, most organ and tissue donations will come from people who have died.
Anyone can register a decision to donate their organs and tissue when they die, regardless of their age or medical conditions. People who have received an organ transplant can also be organ donors.