A large-scale study of the habits and health of British adults revealed that smoking, drinking, not exercising and eating badly can take 12 years off a person's life.
Although previous studies have estimated the impact of the various vices individually, few have looked at their combined impact on the body.
With most people having more than one bad habit, the latest study, say the researchers, gives a better picture of how the choices we make each day affect our health.
To make the link, they first analysed the answers health survey of almost 5,000 adults from across the UK carried out in the mid-1980s.
They focused on four vices - smoking, drinking more than 14 units a week for women, or 21 for men, eating fewer than three portions of fruit and vegetables a day and doing under two hours of exercise a week.
The researchers, including experts from Glasgow, Southampton and Oslo universities, then studied health records to check how many had died over the next 20 years and what they had died from.
source: dailymail
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