Neuropeptide Y (NPY) is a 36 amino-acid peptide that has been implicated in the modulation of feeding behavior, fear, anxiety, seizures, pain perception, stress responses, and memory (Woldbye et al., 1996; Britton et al., 1997; Gutman et al., 2008; Gøtzsche and Woldbye, 2016; Pedroso et al., 2016; Reichmann and Holzer, 2016; Li et al., 2017; Boyle et al., 2023). Here, NPY is linked to Anxiety.