The study, published in NEJM Evidence, shows that smokers who quit smoking before age 40 can expect to live almost as long as those who never smoked. Those who quit at any age return close to never-smoker survival 10 years after quitting, and about half that benefit occurs within just three years.
“Quitting smoking is ridiculously effective in reducing the risk of death, and people can reap those rewards remarkably quickly,” said Prabhat Jha, a professor at U of T’s Dalla Lana School of Public Health and Temerty Faculty of Medicine, who is executive director of the Centre for Global Health Research at Unity Health Toronto.
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