New Scientist: Anti-smoking drug linked to violent behaviour
The anti-smoking drug Chantix is to be investigated by the US Food and Drug Administration after reports linked it to suicidal and violent behaviour.
Of course, an alternative explanation might be that depriving a naturally suicidal or violent person of the calming effect of nicotine might lead to suicidal or violent behaviour.
Fags do have certain benefits to society, as well as their drawbacks.
Ooh! you are awful, but I like you!
Seeing as the calming effect of nicotine is essentially due to it soothing the effects of nicotine addiction and withdrawal, it hardly constitutes a benefit to society.