I think it's the crunching. I also really like the kinda numbed out sensation in my mouth, that strong minty things give.
I've tried rationing but it doesn't work. I get through 30 packets of Polos in a day
I was guessing that it may be a weird pica-like symptom of iron deficiency? I am anemic after all
I guess it could be worse, I could be addicted to crack