The University of California just published the results of a study that looked at whether nicotine patches affected how people responded when provoked.   The study participants, all non smokers, were asked to play a video game and could deliver retaliatory noises to their opponents.  Players who slapped on a nicotine patch were less likely to slap their opponents (ear drums). 

Researches associated nicotine with "changes in brain metabolism … in the brain areas responsible for orienting, planning and processing of emotional stimuli."  The findings support the notion that nicotine may calm people.  Any smoker could have told them that. As a smoker I would often have a cigarette to calm myself down.  When I quit smoking, my temper went from mild mannered to meteoric. According to the American Cancer Society when smokers try to cut back or quit, the lack of nicotine leads to withdrawal symptoms which may lead to smoking.  Withdrawal symptoms can include depression, feelings of frustration, impatience, and anger, anxiety and irritability.  

I tried nicotine patches but found they didn’t deliver a dose of nicotine when I needed it most; driving in traffic, dealing with a difficult customer or balancing my checkbook.  Now, when I crave nicotine I use my DSE901 E Cigarette loaded with my favorite smoke juice.   I actually prefer smoking my DSE901 because my breath and clothes smell better, my teeth are white again and my sense of smell is better.  And using smoke juice it is a heck of a lot cheaper than tobacco.