Tobacco smokers gain weight after quitting smoking with women usually gaining more weight than men.
Dietary restraint is associated with chronic concerns about weight and dieting to attempt to maintain an unreasonably low body weight and is measured by the Revised Restraint Scale of Herman and Polivy. Perkins et al. show that the situational factors such as acute stress or physical activity may also play an important role in variability to nicotine effects. The situational influences may determine why smokers are more likely to smoke under certain conditions, such as high stress. There were no convincing cases of a cannabis-induced psychotic syndrome. The authors also reviewed published studies on the subject.