how does chewing tobacco cause cancer Smokeless tobacco users exposed to

As to the supposed impossibility of giving up smoking once started because of the addictiveness of nicotine, this was clearly nonsense

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complete absence of symptoms in most Occasional redness on the tonsils that can be mistaken for strep or a viral pharyngitis Lymph node tenderness in the neck (uncommon) Rectal infection Anal itching, soreness, or discharge Painful bowel movements Bleeding from the rectum, sometimes mistaken for hemorrhoids The trap is that none of these symptom sets is unique to gonorrhea

Smoking-induced change in intrasynaptic dopamine concentration: effect of treatment for tobacco dependence