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Insulin is an anabolic hormone that elicits metabolic effects throughout the body. In the pancreas, endocrine tissue known as the islets of Langerhans contains beta cells. Beta cells are responsible for insulin synthesis. Beta cells regulate insulin production by monitoring glucose levels, amino acids, keto acids, and fatty acids circulating within the plasma. Insulin’s overall role is controlling energy conservation and utilization during feeding and fasting.[1][2][3]