This book presents and discusses current research in the study of smoking habits and the various health effects which arise due to this activity. Topics discussed include pharmacotherapies for smoking cessation; tobacco use by adolescents and young adults; genetic susceptibility to second-hand smoke; passive smoking in oral health research; influence of smoking during pregnancy on new-born health; teenage smoking and parental awareness; lung cancer in a perspective of evolutionary and dietary habits and the effects of cigarette smoking on the human plasma tocopherols levels.