Epidemiology | Intoxication and Abuse | Diagnosis | Treatment and Withdrawal | Medical Complications
Approximately 42.4% of U.S. adults have ever smoked
cigarettes, with half of those (20.9%) being current smokers (Centers for Disease Control and Prevention 2005). The prevalence
is higher among men and the poor and decreases with increasing educational
levels. Fewer than 9% of adults report past-month cigar
and/or smokeless tobacco use. Although tobacco use has
been declining in the United States, it is increasing worldwide.