Which of the following decreases appetite?: (A) Orexin, (B) Neuropeptide Y, (C) Ghrelin, (D) Leptin
Answer is D. Food intake and appetite are regulated by various circulating hormones including ghrelin and glucagon-like-peptide 1 (GLP-1). Ghrelin, mainly released from the stomach, increases food intake, induces appetite, enhances adiposity as well as releases growth hormone Ref: guyton and hall textbook of medical physiology 12 edition page number:811,812,813