Since 1964, there have been more than 20 million premature deaths attributed to tobacco in the U.S.
"The Health Consequences of Smoking—50 Years of Progress. A Report of the Surgeon General Executive Summary." U.S. Department of Health and Human Services, Centers for Disease Control and Prevention, National Center for Chronic Disease Prevention and Health Promotion, Office on Smoking and Health. 2014. Report.http://www.surgeongeneral.gov/library/reports/50-years-of-progress/exec-summary.pdf