“…Differences between women and men can be identified as sociocultural (gender; Darnall & Suarez, 2009) and biological (sex; Clayton, 2018;Cornelison & Clayton, 2017;National Institutes of Health, 2019). For the purpose of the present narrative review we will use sex/gender (SG) to acknowledge that findings may be driven by both sociocultural and biological factors (Pace et al, 2018;Streed & Makadon, 2017). It is known that SG differences exist on multiple levels, including neurobiology, neurochemistry, and connectivity (Choleris, Galea, Sohrabji, & Frick, 2018;Cosgrove, Mazure, & Staley, 2007;Lind et al, 2017), with relevance for understanding SG differences in the neural mechanisms underlying addiction (Peltier et al, 2019;Sharrett-Field, Butler, Reynolds, Berry, & Prendergast, 2013); yet, even modern neuroimaging studies on addiction often do not account for SG in their analyses.…”