damages your lungs health-related risks due to smoking smoking causes one out of every five deaths American Cancer Society http://www.cancer.org/docroot/PED/ped_10_1.asp?sitearea=PED American Cancer Society Health Risks of Smoking Tobacco – American Cancer Society smoking causes one out of every five deaths 30 percent American Cancer Society 30 percent http://www.cancer.org/docroot/PED/ped_10_1.asp?sitearea=PED Health risks of smoking tabacco health-related risks due to smoking health dangers of traditional tobacco health-related risks due to smoking Health Risks of Smoking Tobacco The American Cancer Society also points out smoking causes one out of every five deaths