This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nutrition, Subject name: Medicine
The principal polypeptide that increases food intake are the following except . 
Select and explain. 
A. Neuropeptides-Y, B. Leptin, C. Orexin -A, D. B-Endorphins
B: Leptin
Answer: B: Leptin 
Explanation: *All the above except leptin increases appetite . Leptin decreses appetite . <img src=" /> Image ref - Harrison internal medicine 20e p2839