So, if you were (for example) 10 years old and fell into a coma and then 15 years later came out of it, while your body would be that of a 25 year old (only with much more decrepitude due to lack of exercise and solid food), your mind would still be in exactly the same place as when you first fell into the coma. read more
They will age. But people in a coma will not age like people not in a coma. Without regular use, their muscles will atrophy. The part of their brain that was damages initially (to trigger the coma) might deteriorate as a result of inflammation or "maintenance" responses to the area. read more