Female non-smokers live 10 years longer than smokers: study
And if women do smoke when young, giving up before hitting 40 will deliver most of the mortality benefits of a non-smoker.
UK researchers surveyed 1.2 million women (average age 55) about their smoking habits then surveyed them three and eight years later and followed them for a mean 12 years.
At baseline 20% were current smokers, 28% ex-smokers and 52% were never smokers.
The researchers found that those who smoked at the start of the survey were nearly three times more likely