Smoking is a greater cause of death and disability than any single disease, says the World Health Organisation. According to their figures, it is responsible for approximately five million deaths world-wide every year. Tobacco smoking is a known or probable cause of approximately 25 diseases including cancer, heart attacks and strokes. The WHO says that its impact on world health is still not fully assessed. This book offers leading edge research from around the globe with a focus on smoking cessation and the effects of passive smoking on health.