system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
The MOST abundant source of ghrelin is:
assistant
The correct answer is  Ghrelin is a 28 amino acid peptide mainly secreted from stomach and the most abundant source is gastric fundus. It also produced from intestine, pancreas, pituitary, kidney, placenta. ACTION: It increases growth hormone secretion It increases food intake It increases weight gain Ref: Sleisenger and Fordtran's, Edition-9, Page-8.