A person might be able to recognize if something is wrong with their body that they can prevent by seeing the correct personell, or more actively, for example, if one knows CPR and is able to save a choking person.
Kidneys die because when your sugar level goes up and gets to high the the kidney is trying to work it’s butt of to try to flush all the sugar out so people with high blood sugar have to pee a lot more often and in larger amounts