Doctor ate ultra processed food for a month and his brain changed

Doctor Chris van Tulleken gained 6.5kg of body weight and 3kg of body fat, felt sluggish and "10 years older". PHOTO: BBC STUDIOS
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SINGAPORE - You know that eating a diet of junk food makes kids gain weight. But what happens to their brains?

British doctor Chris van Tulleken, 42, made himself a guinea pig in a bid to find out. The results of his experiment, chronicled in the new BBC Earth documentary, What Are We Feeding Our Kids?, show worrying changes to his brain that did not go away even after he stopped the diet.

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