Tobacco smoking addiction and nicotine dependence

Although there have been steady declines in smoking prevalence rates in most high-income countries, tobacco smoking remains a leading cause of premature death and preventable disease globally(Di Cesare et al., 2013). In some low-and middle-income countries, with growing economies and more liberalattitudes, the number of smokers is rising. Globally, while the total percentage of people smoking is decreasing, because of the growing population the total number of people smoking is still increasing and forecast to continue.