Conversely, MC3R KO mice are hypersensitive to various anorexic challenges, including stress‐related anorexia (Sweeney et al., 2021) (restraint stress and social‐isolation‐induced anorexia), diverse forms of pharmacological anorexia (Dahir et al., 2024; Sweeney et al., 2021) and physiological anorexia (tumour‐associated anorexia) (Marks & Cone, 2003; Marks et al., 2003). Here, MC3R is linked to Anorexia.