Smoking behavior of type A and type B smokers.

Retrospective surveys have compared smoking between Type A and Type B individuals; however, prospective studies using objective measures have not been reported. In Study 1, we used an ambulatory smoking recorder to compare the smoking behavior of Type A and Type B smokers. Individual smoking behaviors and the derived tobacco and nicotine exposures were similar for Type A and Type B smokers. In Study 2, we compared serum nicotine before and after smoking a cigarette between Type A and Type B smokers. Pre-cigarette and post-cigarette nicotine levels and nicotine boost were similar for Type A and Type B smokers. We conclude that Type A and Type B smokers do not differ in smoking behavior or tobacco and nicotine intake.