(Undated) -- The Great American Smokeout is this Thursday. The American Cancer Society encourages smokers from Fulton County and the rest of the state and country to quit the habit on the third Thursday of each November. Tobacco use is the single largest preventable cause of disease and premature death in the US. Yet, there are still 42-million cigarette smokers in the US. Tips and programs to help people quit smoking are available at the American Cancer Society website, www.cancer.org.