This post was written by Christina Ondercin, FNP-C, PPG - Family Medicine Minnich.
Have you ever felt like you’re “doing everything right” but your body just won’t cooperate? You’re eating less, moving more, yet the scale barely moves — and you’re constantly tired. One often-overlooked reason for this is insulin resistance. In this post, we break down how this silent metabolic imbalance can lead to prediabetes, type 2 diabetes and other chronic health issues.
What is insulin resistance?
Insulin is a hormone produced by the pancreas that helps move glucose (sugar) from your bloodstream into your cells, where it’s used for energy. When your cells become resistant to insulin’s signal, the body compensates by releasing more insulin to get the same job done.
Think of insulin as a key that unlocks your cells. In a healthy person, one key easily opens the door. After eating a bowl of pasta or cereal, blood sugar rises temporarily; insulin does its job efficiently, and levels return to normal within a few hours.
In someone with insulin resistance, those locks are “rusty.” The pancreas must produce far more keys (insulin) just to open the doors a little. After that same meal, their blood sugar spikes higher and stays elevated longer. Then comes the crash. Because the body releases so much insulin to bring sugar levels back down, blood glucose may dip too low a few hours later. This cycle is called reactive hypoglycemia. That’s when people feel shaky, irritable, hungry or suddenly drained of energy. Over time, this sequence of spikes and crashes leaves the body tired, inflamed and more resistant to insulin.
Why it matters
Insulin resistance often develops gradually, so many people don’t realize they have it. Common signs and symptoms include:
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Persistent fatigue or “afternoon crashes”
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Strong cravings for sweets or carbs
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Difficulty losing weight, especially around the waist
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Elevated triglycerides or cholesterol
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Darkened patches of skin (acanthosis nigricans)
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Polycystic ovary syndrome (PCOS) in women
When left unchecked, insulin resistance can quietly progress for years before showing up as prediabetes or type 2 diabetes. It also increases risk for high blood pressure, heart disease and fatty liver disease.
What causes it
There’s no single cause. Insulin resistance develops from a mix of genetics, lifestyle and environmental factors. Major contributors include:
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Diets high in processed foods and added sugars
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Inactivity or prolonged sitting
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Excess body fat, particularly abdominal fat
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Poor sleep and chronic stress (which raises cortisol)
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Certain medications and hormonal imbalances.
How it’s diagnosed
Your doctor can screen for insulin resistance using common lab tests:
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Fasting glucose and fasting insulin
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Hemoglobin A1c (average blood sugar over 3 months)
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Lipid panel (triglycerides and HDL cholesterol)
You don’t need all of these to start understanding your risk. Even trends like higher triglycerides and increasing waist size can be early clues.
Can it be reversed?
Insulin resistance is often reversible with targeted lifestyle changes. Even modest adjustments can dramatically improve how your body processes glucose. Data-driven strategies include:
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Choosing whole, minimally processed foods over refined carbs
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Incorporating more movement throughout your day, in addition to structured workouts
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Losing 5–10% of body weight can considerably boost insulin sensitivity
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Getting enough sleep (7–8 hours nightly) and coping with stress
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Working with your provider to observe progress and, if needed, discuss medications like metformin or GLP-1 therapies
Takeaway
Insulin resistance is incredibly common, but it doesn’t have to lead to diabetes or disease. Regular visits to your family medicine provider are an ideal way to spot health issues before they become major problems. The earlier it’s identified, the easier it is to correct. Small, consistent changes in diet, activity and stress management can restore balance to your life.
If you need help scheduling an appointment or establishing care with a provider, our Access Center can help. Call any time, at 877-PPG-TODAY or 877-774-8632 for assistance.
For additional questions or concerns about managing diabetes, please call Parkview Diabetes Care Services at 260-373-4280 to speak with a diabetes educator, registered dietitian or lifestyle change specialist.
