Table 1: Neurotransmitters influencing appetite.

Neurotransmitters that increase food intakeNeurotransmitters that decrease food intake

Agouti-related peptideAlpha melanocyte-stimulating hormone
Neuropeptide YBombesin-/gastrin-releasing peptide
Melanin-concentrating hormoneCalcitonin gene-related peptide
OrexinCholecystokinin
GalaninCorticotrophin-releasing factor
GhrelinDopamine
Nitric oxideGABA
NoradrenalineGlucagon
Opioids (particularly and agonists)Glucagon-like peptide 1 (7–36) amide
Neurotensin
Serotonin