I think obesity and smoking are just as harmful and as serious (they are just more socially acceptable). Heck - with smoking, the scars are just internal and proven to cause severe damage to internal organs. And obesity also has the health risks and can't be hidden. I think that SI, depending on how superficial it is, could be or not be a risk for suicide. It depends. And it's done to manage intense emotional pain, not as a means for Sui.

Nonetheless, smoking and obesity are slow suicide IMO. And a T who has smoking or obesity (due to overeating) struggles is using unhealthy coping mechanisms. Isn't that the issue? Having a T who struggles like that emotionally? Or am I missing what the aversion would be?