> Although limestone is still considered safe and is used as e.g. filler in pills.
AFAIK this makes sense. Asbestos is really dangerous only in the lungs, so you need to inhale a "friable" form of it somehow. Putting it in your stomach won't do anything.
I bet if you ate asbestos continually it would probably irritate the lining of your colon and increase the likelihood of IBS or Colon Cancer. Everything can and will kill you at some level.
Sounds complicated, and even if I did start chewing on brake pads (my only available source of asbestos) then my findings would be limited to n=1 which can be ignored or relegated to anecdote.
AFAIK this makes sense. Asbestos is really dangerous only in the lungs, so you need to inhale a "friable" form of it somehow. Putting it in your stomach won't do anything.