How many years can you be in a coma for
The time some one in a coma varies. I had a parent that was in a coma 10 yrs. This was not induced.
As many years as they choose to wait, to pull the plug.
They could be in a coma for the rest of their lives
Longest person in a coma was 27 years. The brain doesn't heal like a flesh wound, it's takes longer to heal.