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What are Beta Cells?

Niki Acker
By
Updated Feb 29, 2024
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Beta cells are responsible for creating and releasing the hormones insulin and amylin, which serve to regulate glucose levels in the blood. They make up 65 to 80% of the cells in the islets of Langerhans, the endocrine structures in the pancreas. In addition to the hormones they produce, these cells also release a byproduct of insulin production called C-peptide, which aids in the repair of the muscular layers of the arteries, thereby preventing neuropathy and similar complications of vascular deterioration.

A base level of insulin is maintained in a healthy person's pancreas at all times, but more is released and created in response to a spike in blood glucose, such as that accompanying the digestion of carbohydrates. Beta cells respond to the body's glucose levels by releasing that extra insulin when it is needed. They are able to respond rather quickly to a spike in blood glucose, usually in about ten minutes. Amylin, also called islet amyloid polypeptide (IAPP), works in conjunction with insulin by regulating glucose levels in the blood in a more short-term manner.

People who suffer from diabetes have malfunctioning beta cells. In diabetes type I, the body's immune cells destroy these cells, while in diabetes type II, they gradually stop functioning over time. In both types, the lack or reduction of insulin leads to hyperglycemia, or abnormally high blood sugar. Insulin replacement therapy is mandatory for treating diabetes type I and may be required for advanced cases of type II.

Another condition affecting the beta cells is insulinoma, a rare pancreatic tumor derived from these cells that results in the unregulated release of insulin, leading to hypoglycemia, or low blood sugar. Medication may be used to regulate this condition, but the only definitive treatment is surgical removal of the tumor. About 2% of people who undergo this surgery develop diabetes type II as a result. In rare cases, a pancreatic tumor releasing excess insulin is cancerous, in which case it is treated with chemotherapy.

WiseGeek is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.
Niki Acker
By Niki Acker , Writer
"In addition to her role as a WiseGeek editor, Niki Foster is passionate about educating herself on a wide range of interesting and unusual topics to gather ideas for her own articles. A graduate of UCLA with a double major in Linguistics and Anthropology, Niki's diverse academic background and curiosity make her well-suited to create engaging content for WiseGeekreaders. "

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Niki Acker

Niki Acker

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"In addition to her role as a WiseGeek editor, Niki Foster is passionate about educating herself on a wide range of...
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