Active pensioners 'add six years'

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http://www.bbc.co.uk/news/health-19421818

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The researchers said they did not know how big the effect would be after 75, so they followed a group of people for 18 years.

Extra years
They showed that smokers died a year earlier, but people who quit in middle age were almost as long-lived as those who had never smoked.

Swimming, walking and gymnastics increased life expectancy by around two years. People with a rich social circle lived a year and a half longer than those without.