It takes smokers' hearts at least 15 years to recover after quitting cigarettes

Smokers will have to wait 15 years after quitting for their heart disease and stroke risk to return to a normal level, a new study has found.

Previous studies suggest former smokers' stroke risk stabilizes within five years, but new research shows it may take triple the time.

The report, which will be presented next week at the American Heart Association conference, is the first to examine the connection in a living cohort.

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