"The ARC contains a high density of neurons that produce orexigenic peptides such as neuropeptide Y (NPY), opioids, β-endorphin (β-END), galanin (GAL) and glutamate. α- melanophore-stimulating hormone (α-MSH), an anorexigenic peptide, is also co-produced with β-END in ARC."
Thank you andedammen, that is exactly what I was thinking too.