One sleepless night weakens resolve in the face of doughnuts

Sleep loss changes brain activity, food preferences

MMM, DOUGHNUTS  When confronted with a picture of junk food, people who pulled all-nighters had boosted activity in the amygdala (left), a brain structure associated with the desire to eat, and reduced activity in regions of  the cortex (right), which have been tied to food evaluation. 

Matthew Walker et al.

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