Dr Ghazi Zaatari, professor and chair of Pathology and Laboratory Medicine at AUB Medical Center, is a world leader in studying the impact of tobacco on people’s health and advocating for reducing the use of tobacco products. He founded the Tobacco Research Group at AUB and heads the WHO Study Group on Tobacco Products Regulation. In this episode he retraces his journey from a young scientist who was alarmed by the high rates of cancer in Lebanon to a global leader in advocating for control of the promotion and use of cigarettes, water pipes, vaping products and other damaging habits.