Tobacco is the only legal substance that kills many of its users(1). Tobacco smoke is the most preventable cause of morbidity and mortality worldwide(2). each year around 6 million people are killed by tobacco(3). By the year 2020, tobacco is projected for 10% of all deaths worldwide(4). About 20% of all deaths in developed countries are caused by smoking(3). nearly 80% of the more than 1 billion smokers worldwide live in low- and middle-income countries(5).