[supremedoctrine]

Supposedly caused by longterm use of chewing tobacco, which seems to do more harm than cigarettes, and more predictably.
If you’ve even seen pix of gums and teeth affected by chaw you know what I mean. Gums are the bone holding them in place are positively DESTROYED, leaving not enough support for even otherwise healthy teeth.

[Luke21]

My wife showed me those pics in the late seventies. I quit chewing then and there.

[Extremely Extreme Extremist]

I read about a teenager trying spit tobacco and two years later he was DEAD. This is some nasty stuff, it's way worse than just smoking cigarettes.