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Diabetes: How insulin works
Insulin acts like a key, opening body cells so that glucose can enter the cell to provide a source of energy.
Insulin is like the key to a car. A car needs fuel to run, but the key provides the spark that releases the fuel. In your body, insulin is used to "spark" the use of glucose as fuel in your cells.
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Allina Medical Clinic - Diabetes Education
Diabetes, endocrinology and metabolism specialists
Dialog: Living with Diabetes (e-newsletter)
Source: Allina Patient Education, Basic Skills for Living with Diabetes, fourth edition, ISBN 1-931876-16-9
First published: 12/01/2006
Last updated: 12/01/2006
Reviewed by: Allina Patient Education experts