The annual Great American smokeout is scheduled for Thursday
The American Cancer Society observes the annual event on the third Thursday in November each year. The event encourages smokers to make a plan in advance and quit smoking that day. Tobacco use remains the largest preventable cause of disease and premature death in the U.S. An estimated 43.8 million Americans smoke. research shows that smokers are most successful in kicking the habit when they have support, such as stop smoking groups, counseling and other programs.