According to the PET scan study comparing dopamine brain receptors in obese and normal weight individuals, obese people may engage in compulsive or binge eating to stimulate brain dopamine pathways and pleasurable sensations.

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The PET scan study found that obese individuals had lower levels of dopamine receptors, which may lead them to compulsively engage in behaviors like binge eating to stimulate the brain's dopamine pathways and experience pleasurable sensations.

According to the PET Scan Study Comparing Dopamine Brain Receptors