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The reasons why we get ‘middle-aged spread’

Hannah Fry and Adam Rutherford discuss the causes of middle age spread and why a 'fat bum'

Why do we become a bit squidgy around the middle as we grow older? Find out in this animated audio clip from the BBC Radio 4 series, The Curious Cases of Rutherford and Fry.

The Curious Cases of Rutherford and Fry has a rather good podcast – you can download it from the Radio 4 website. There are also more animations and stories from the team to enjoy on BBC Future.

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