system
Given the following post, respond as if you're commenting on Reddit:
human
Do people physically age normally when in a coma?

Would a person who went into a coma at 20 look like a normal 50 year old when they are 50?
gpt
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. On the other hand, stress would be low. But the heart still beats, the lungs still breathe, etc. 

A 50-year old who awoke from a 30-year coma would look like a 50 year old, but with much reduced muscle tone and severe cognitive deficits.