Smokers can extend their lives by quitting even if they wait until their 60s to kick the habit, research has shown.
A new study confirms that it is never too late to stop smoking - and the earlier you give up, the longer you are likely to live.
Scientists found that smokers aged 70 and over were three times more likely to die over a period of six years than those who had never smoked.
Quitting at different points in time between the ages of 30 and 69 progressively reduced the chances of dying.
Just 12.1 per cent of never-smokers in the study group died, compared with 33.1 per cent of current smokers.