Insulin resistance is one of the most common and most consequential metabolic conditions in men — and one of the least diagnosed until it has progressed to type 2 diabetes. It is the underlying driver of belly fat accumulation, energy crashes, brain fog, high blood pressure, high triglycerides, low testosterone, and accelerated aging. Most men who have it feel its effects every day without connecting them to a single root cause. Here's how to recognize it.
2026/07/28
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8 Signs You Have Insulin Resistance — The Condition Affecting 1 in 3 Men
Insulin is the hormone produced by the pancreas that signals cells to absorb glucose from the bloodstream. Insulin resistance occurs when cells stop responding normally to insulin — requiring the pancreas to produce progressively more insulin to achieve the same glucose clearance.
This compensatory hyperinsulinemia is itself deeply damaging: high insulin promotes fat storage, suppresses fat burning, drives inflammation, and creates the metabolic cascade that produces most of the symptoms below.
Sign #1: Belly fat that accumulates despite diet and exercise.
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