When I smoke tobacco, I am more easily irritated, my thoughts turn negative and self- harming, and I find it much more difficult to deal with standard, day-to-day bs.
When my husband smokes tobacco, he is very easily frustrated, finds it more difficult to concentrate on and complete tasks, and he blows up at me...when otherwise he is anything BUT an exploding husband.
When my mom smokes tobacco, she becomes more socially anxious and self-isolating, her smoker's "coolness" translates as plain, detached coldness towards me and anyone she is "close" to, and her appetite becomes erratic, keeping her from being active and healthy.
These are my personal experiences with tobacco and mental health.
All three of us; me, my husband, and my mother have quit within the last year, and we feel energy and hope...2 things smoking tobacco never gave to us.
Cigarettes are a cold, calculated method of population control, that's how it appears to me at least.