ANSWERS: 2
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TEN LEADING CAUSES OF DEATH IN THE U.S.A. http://www.geocities.com/madmaxmcgarrity/TENCAUSESofDEATH.htm Heart disease is the leading cause of death of Americans 24 years of age and older, 30.3% or 724,269 annual deaths are due to heart disease. Sixteen percent of those deaths, 115,883, occur in smokers. Cancer is the second leading cause of death causing 23% or 538,947 deaths. Twenty-three percent of those are lung cancer, 83% of lung cancers occur in smokers and ex-smokers (101, 724). Dr. Barbara Starfield of the Johns Hopkins School of Hygiene and Public Health, [CDC NVSR 2001]. Not listed are the 47,000 people who die from flu/respiratory syncytial virus (National Flu Surveillance Network), the 50,000-100,000 who die from air pollution (Center for Energy Efficiency and Renewable Technologies), or the 60,000 to 200,000 deaths from deep vein thrombosis (American Public Health Association and the Centers for Disease Control and Prevention). THIS LOOKS LIKE AS CLOSE AS THEY CAN ESTIMATE.
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That is a hard question to answer. Almost always more than one factor contributes to heart attack or cancer. Smoking is one factor among others.
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