A new study by University College London suggests that those who enjoy life are three times more likely to live longer than those who enjoy it the least, as reported by BBC News.

Prof Steptoe said this could be happening because the kind of people who are happy are the kind who take care of themselves and are therefore quite healthy.

He also suggested that people of a happy disposition were less stressed.

And he also suggested that environmental factors, such as strong social networks, could be at play.

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