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How can insulin resistance connect obesity with type 2 diabetes?
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obesity
The excessive accumulation of body fat can cause serious medical conditions.
Insulin resistance serves as a critical link between obesity and type 2 diabetes.
In a healthy state, insulin triggers cellsāparticularly muscle and adipose cellsāto take up and metabolize glucose from the bloodstream for energy. In individuals with obesity, these cells often become resistant to the effects of insulin, meaning they lose their ability to effectively absorb glucose.123
This resistance creates a cycle that leads to hyperglycemia (high blood sugar):
- Compensatory Stress: Initially, the body may attempt to overcome this resistance by increasing insulin production, often resulting in higher-than-normal serum insulin concentrations.4
- Systemic Failure: Over time, if the body cannot produce sufficient insulin to compensate for this resistance, glucose accumulates in the blood.14
- Diabetes Onset: This persistent inability to properly utilize or store glucose, characterized by insulin resistance and/or deficiency, establishes the clinical diagnosis of type 2 diabetes.45
Because obesity is a primary driver of this resistance, it is a major risk factor for developing the disease.4