Playing with TGM prevents damage forever
If you use tgm a few times, loading saving games, you have a chance of permanently glitching the game such that you will no longer take any damage.
I've tried to delete the openmw preferences, make clean etc...
(RM-1627 from redmine: created on 2014-07-07 by Jeffrey Haines, , closed on 2014-07-07 by nobody)