Even if someone doesn't consider themselves a smoker, every "bummed" cigarette causes damage to vital organs in the body. Give that pancreas a break.
Young, Saundra. "Surgeon General report: Tobacco smoke does immediate damage." CNN. 09 Dec. 2010. Web.http://www.cnn.com/2010/HEALTH/12/09/tobacco.risk/
"How Tobacco Smoke Causes Disease: The Biology and Behavioral Basis for Smoking-Attributable Disease." Centers for Disease Control and Prevention, National Center for Chronic Disease Prevention and Health Promotion, Office on Smoking and Health. Atlanta, GA. 2010: 6.http://www.ncbi.nlm.nih.gov/books/NBK53017/