Top 8 Insulin Resistance Symptoms You Need to Know
One important warning: insulin resistance often causes no noticeable symptoms, especially in its early stages. It is usually identified through risk factors and blood tests rather than symptoms alone.
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Possible clues include:
Dark, velvety skin — Especially around the neck, armpits, or groin. This is called acanthosis nigricans and can be associated with insulin resistance.
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Skin tags — Multiple small skin tags, particularly around the neck or armpits, may occur alongside insulin resistance.
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Increased hunger — Some people may experience increased appetite as blood-sugar regulation becomes impaired.
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Fatigue — Tiredness can occur as blood glucose begins to rise, although it has many other possible causes.
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Increased thirst — More noticeable thirst can occur when blood glucose becomes elevated.
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Frequent urination — This is more characteristic of developing diabetes than insulin resistance itself, but it can be an important warning sign of high blood sugar.
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Blurred vision — Elevated blood glucose can affect vision.
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Slow-healing sores or recurrent infections — These can occur when blood glucose becomes high enough to cause diabetes-related problems.
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The best way to find out
You cannot reliably diagnose insulin resistance from symptoms alone. Healthcare professionals typically look for prediabetes using blood tests such as A1C, fasting blood glucose, or an oral glucose tolerance test.
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For example, an A1C of 5.7%–6.4% or fasting glucose of 100–125 mg/dL (5.6–6.9 mmol/L) falls in the prediabetes range.
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If you have several of these signs—or risk factors such as excess weight, a large waist circumference, physical inactivity, family history of type 2 diabetes, or PCOS—consider asking a healthcare professional about blood-glucose testing.
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