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What does glucagon do?

Published in Hormone Function 1 min read

Glucagon is a hormone that plays a vital role in regulating blood sugar levels. Specifically, glucagon increases blood sugar levels and prevents them from dropping too low. It works in opposition to insulin, another hormone, which decreases blood sugar levels. Glucagon is produced by the pancreas.

In more detail, here's what glucagon does:

  • Increases Blood Sugar: Glucagon's primary function is to raise blood glucose (sugar) levels when they are too low.

  • Prevents Hypoglycemia: By increasing blood sugar, glucagon helps prevent a condition called hypoglycemia, where blood sugar levels become dangerously low.

  • Works Opposite Insulin: While glucagon raises blood sugar, insulin lowers it, creating a balance that's essential for maintaining healthy blood sugar levels.

Here's a simple table summarizing the roles of glucagon and insulin:

Hormone Effect on Blood Sugar
Glucagon Increases
Insulin Decreases

In essence, glucagon acts as a counter-regulatory hormone to insulin, ensuring that blood sugar levels remain within a healthy range.

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