This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hormones, Subject name: Physiology
[{'content': 'Following is true of hormone leptin except: \nSelect and explain. \nA. It is found in increased levels in obese, B. Site of action is hypothalamus, C. It is produced by adipose all, D. It increases appetite', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans: D (It increases appetite) Ref: Pal GK, Functions of Hypothalamus, In: Textbook of Medical Physiology, Ahuja Publishing House, 118:889Explanation:LeptinProtein of 167 amino acidsManufactured primarily in the adipocytesHigh leptin level occurs in obesity - | sympathetic activity; | food intakeLow- leptin level occurs in starvation | parasympathetic activity; | food intakeActs on hypothalamus, arcuate nucleus identifies plasma leptin concentration.Regulates onset of pubertyStimulates thyroid functionControls glucocorticoid secretion', 'role': 'assistant'}]