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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.
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Which of the following hormone is not involved in regulation of food intake?
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The correct answer is  Ghrelin is secreted primarily by the stomach especially during fasting, and stimulates appetite. Peptide YY (PYY), Cholecystokinin (CCK), and Insulin are gastrointestinal hormones that are released by the ingestion of food and suppress fuher feeding. Gastrin has no role in regulation of food intake. Leptin is a hormone produced in increasing amounts by fat cells as they increase in size. It inhibits food intake.