Final answer:
Over six million deaths per year can be attributed to cigarette smoking. Smoking is the single greatest cause of preventable death worldwide.
Step-by-step explanation:
Over six million deaths per year can be attributed to cigarette smoking.
Smoking is the single greatest cause of preventable death worldwide.
As many as half of all tobacco smokers die from it, and long-term smokers can expect their lifespan to be reduced by as much as 18 years.
Smoking is also the major cause of chronic respiratory disease, cardiovascular disease, and cancer.