Why are we not all fat at the Cambridge Science Festival - clip 1

22/03/2011 4 min

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Episode Synopsis

Stephen O'Rahilly explores the question 'Why isn't everybody fat?'
The last 50 years represent the first time in history in which the developed world have had access to abundant calories, so it’s unsurprising that obesity is
common. What’s more puzzling is that there are still lots of lean people. Professor Stephen O’Rahilly explains fundamental biological processes that
regulate energy balance and how these interacted with evolutionary forces over many millennia.

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