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What is an insulinoma?

An insulinoma is a tumor, usually benign (non-cancerous), made up of specialized beta islet cells that constantly secrete insulin, causing hypoglycemia (low blood glucose–sugar). Normally, as the glucose rises with eating, the pancreas responds by secreting more insulin, which in turn helps utilize or store the glucose and its blood level drops back down into a safe range. Subsequently, as the glucose level continues to fall toward the lower limit of normal (normal, 60-100mg/dL), the secretion of insulin (by the normal beta cells in the pancreas) stops, and this allows the glucose to remain in the normal range. 

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.