Highly rewarding foods activate the brain’s reward circuitry in patterns resembling those seen with addictive drugs — a blood-oxygen signal rather than dopamine. Research by Gearhardt using fMRI shows palatable foods activating the same brain regions as drugs — in 39 young women, with the key contrast resting on fifteen against eleven. Fazzino quantified hyperpalatable combinations: fat + sugar, fat + salt, carbs + salt. These foods are engineered to maximize pleasure while minimizing satiety.
This companion covers the reward system basics, what makes food highly rewarding, the “bliss point,” why reward drives overconsumption, brain imaging evidence, and practical implications. (5 min read)
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