Kicking the habit by age 40 reduces the excess risk of death by about 90%, new research finds.
People who smoke take at least 10 years off their life expectancy, a new study has found.
On the other hand, those who kick the habit before age 40 reduce the excess risk of death associated with continued smoking by about 90%, according to the study in Thursday’s New England Journal of Medicine.
Read more: http://www.usatoday.com/…/smoking-cessation-life-expectancy/1858913/