Iozzo, P., Guiducci, L., Guzzardi, M. A., & Pagotto, U. (2012). Brain PET imaging in obesity and food addiction: current evidence and hypothesis. Obesity facts, 5(2), 155–164. https://doi.org/10.1159/000338328
From the literature review’s abstract: “This review summarizes the current evidence, supporting the concepts that regions involved in the somatosensory response to food sight, taste, and smell are activated by palatable foods and may be hyperresponsive in obese individuals, areas controlling executive drive seem to overreact to the anticipation of pleasure during cue exposure, and those involved in cognitive control and inhibitory behavior may be resistant to the perception of reward after food exposure in obese subjects.”