Insulin sensitivity

Insulin sensitivity describes how effectively your cells respond to insulin to take up glucose from the blood. High sensitivity means less insulin is needed to manage blood sugar; low sensitivity (insulin resistance) is the opposite.

It matters because insulin resistance is an early step toward type 2 diabetes and is linked to broader metabolic and cardiovascular risk. Improving sensitivity is one of the most valuable metabolic health goals.

In practice, regular exercise, muscle mass, good sleep and avoiding chronic energy surplus all tend to improve insulin sensitivity; markers include fasting glucose and continuous glucose patterns.