The Yale University study found that higher food addiction scores correlated with greater activation in certain areas of the brain — the same areas that light up among people with a substance dependence.

Participants included 48 healthy young women ranging from lean to obese. They were presented with both a chocolate milk shake and a tasteless control solution. Milk shakes were chosen not only for their high fat and sugar content, but also because it allowed participants to keep still during head scans.

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