Davis, C., et al. (2014). Food addiction and its association with a dopaminergic multilocus genetic profile. Physiology and Behavior. https://doi.org/10.3389/fpsyg.2014.00403
From the experimental study’s abstract: “The finding that the food-addiction group was resistant to the food-intake suppression typically induced by a dopamine agonist supports evidence of dopamine signaling-strength differences.”