Insulin Sensitivity
Definition
A measure of how effectively the body's cells respond to insulin to take up glucose from the bloodstream, representing the opposite end of the spectrum from insulin resistance. High insulin sensitivity means cells require less insulin to lower blood glucose, while low insulin sensitivity (insulin resistance) requires more. CGM data reflects insulin sensitivity through the speed and magnitude of postmeal glucose return to baseline — faster normalization indicates better sensitivity. Exercise, sleep quality, and body composition are the primary modifiable factors affecting insulin sensitivity.
Why “Insulin Sensitivity” Matters for Glucose Monitoring
Understanding insulin sensitivity is essential for anyone using or evaluating a continuous glucose monitor. This concept directly affects how CGM devices are designed, how glucose data is interpreted, and how clinical decisions about blood sugar management are made.
This term is particularly relevant to 2 CGM products in our database. Understanding insulin sensitivity helps you compare devices more effectively and choose the right continuous glucose monitor for your specific needs.
Related Terms
A metabolic condition in which the body's cells respond poorly to the hormone insulin, forcing the pancreas to produce progressively larger amounts to maintain normal blood glucose levels.
Homeostatic Model Assessment of Insulin Resistance, calculated as fasting insulin (μU/mL) multiplied by fasting glucose (mg/dL) divided by 405.
Blood glucose levels measured after eating, typically peaking 60 to 90 minutes after a meal and returning to baseline within 2 to 3 hours in healthy individuals.
The insulin-producing cells located in the islets of Langerhans within the pancreas, responsible for sensing blood glucose levels and secreting the appropriate amount of insulin to maintain glucose homeostasis.