Smoking and the lungs

In New Internationalist, Mary Assunta(2004) has reported that Asian smokers inhale about 50 per cent of the world's cigarettes.Dr. Zarihah Zain(2007) reported that the percentage of male smokers consists of 46.4% of its population in Malaysia, followed by 1.6% of female smokers. Cigarette smoking is leading preventable cause of death and illness among Malaysians as it claims 10,000 lives a year and is the country's top killer. The incidence of lung cancer is strongly correlated with cigarette smoking, with about 90% of lung cancers arising as a result of tobacco use. The risk of lung cancer increases with the number of cigarettes smoked and the time over which smoking has occurred.