electronic cigarettes harmful Health Issues - What's the Harm? Factsheets | Tobacco Prevention Toolkit
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Or willfully harmful behaviour

CS exposure was performed twice daily to four cigarettes, once early in the morning and secondly in the late afternoon with a recovery phase of 6.5 h, on five days a week

Ingalls, If You Smoke, Scientific American 154 (1936): 310313, 354355

A shallow generalization gradient indicates a stronger generalization between stimuli, whereas a steeper generalization gradient indicates a stronger discrimination between stimuli

A smoker absorbs somewhere between 1 and 2 mg of nicotine from each cigarette, so 40 mg is worth somewhere between 20 and 40 cigarettes
