Previous studies indicate that neuropeptide Y (NPY) has promise to provide therapeutic relief of PTSD symptoms in males (Serova et al., 2013, 2017; Laukova et al., 2014; Sabban et al., 2015a, b; Schmeltzer et al., 2016; Sabban and Serova, 2018; Sayed et al., 2018). This evidence concerns the gene NPY and post-traumatic stress disorder.