This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
[{'content': 'Appetite suppressors are all EXCEPT : \nSelect and explain. \nA. Melanocyte stimulating hormone, B. Melanocyte corticotropic releasing hormone, C. Neuropeptide Y, D. Leptin', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Alpha-Melanocyte-Stimulating Hormone (alpha-MSH) and corticotropin-releasing hormone (CRH) both suppress food intake.\nNPY is known to be an extremely potent stimulator of feeding behavior.\nLeptin appears to act, at least in part, by inhibiting NPY synthesis and release in the hypothalamus.', 'role': 'assistant'}]