According to the World Health Organization (2019):
Tobacco kills up to half of its users. Worldwide, tobacco kills more than 8 million people each year. More than 7 million of those deaths are the result of direct tobacco use while around 1.2 million are the result of non-smokers being exposed to second-hand smoke. In its most recent report to the WHO, Health Canada reports that 45,464 deaths occurred in Canada that are directly attributable to tobacco smoking.