DRD2 and eating disorder: Food addiction, often categorized as an eating disorder, shares genetic markers with other similar disorders, including those that code for the dopamine D2 receptor and the opioid receptor gene (OPRM1 gene) (Davis et al., 2011) with studies indicating symptomatic convergence between food addiction and other eating disorders through questionnaire-based assessments (Ratković et al., 2023; Walenda et al., 2021).