KIDS ARE THE KEY TO UNDERSTANDING OBESITY. BUT WE NEED MORE OF THEIR GENES
BBC Science Focus|December 2023
We can unravel the role that bodyweight plays in disease, but we need a bigger, more diverse, sample of genetic material to do so
KIDS ARE THE KEY TO UNDERSTANDING OBESITY. BUT WE NEED MORE OF THEIR GENES

When I was a young postdoctoral researcher at Cambridge in 2002, a colleague took me to a fancy dinner at Peterhouse College, the oldest of Cambridge's colleges.

It was a six-course affair and, rather ridiculously, you had to change seats (and hence dinner companions) for each new course. During the first course, an older, bearded professor sitting opposite me asked, "So young man, what do you do?" I told him I was working on the genetics of childhood obesity.

"Ha! Do you know what your problem is?" he replied. "You give fat people an excuse." The disgust in his tone threw me and as I mobilised all my diplomatic nous to gently push back, I was saved by a literal bell, signalling that we had to switch seats for course number two.

It occurred to me later that the professor's view was shared by much of society. Obesity is seen as a problem of physics; people just need to eat less and move more. But although how we get to our body weight is reliant on physics, the real question is why? Why do people behave so differently toward food? Why do some people respond to stress by eating more and others by eating less? Why do some people love food, while for others it's simply fuel? Why, what, when and how much we eat have powerful societal and cultural underpinnings.

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