WHO estimates that there are about 1100 million smokers in the world today. About 300 million (200 million males and 100 million females) are in the developed countries, and nearly three times as many (800 million: 700 million nales and 100 million females) in developing countries.global consumption of cigarettes has been rising steadily since manufactured cigarettes were introduced at the beginning of 20th century. The consumption of tobacco has reached the proportion of global epidemic. Tobacco companies are producing cigarettes at the rate of five and a half trillion a year –nearly 1000 cigarettes for every man,woman and a child on the planet. Asia, Australia and the far east are by far the largest consumers (2715 billion cigarettes), followed by Americans (745 billion), eastern Europe and former soviet economies (631 billion ) and western Europe ( 606 billion ).