What Is Insulin Resistance?

To understand insulin resistance, it helps to start with insulin itself. Insulin is a hormone made by your pancreas. Think of it like a key — its job is to unlock your cells so that glucose (sugar from the food you eat) can get inside and be used as energy. In a healthy body, this system works beautifully.

But over time, due to stress, poor sleep, a diet high in processed foods, low physical activity, or hormonal imbalances, your cells can start to ignore insulin's signal. They become resistant to the key. In response, your pancreas produces more and more insulin trying to get the job done. For a while, blood sugar stays relatively normal, but the excess insulin is quietly causing damage behind the scenes. This is insulin resistance. And by the time it shows up on a standard blood sugar test, it has often been building for years — sometimes a decade or more (6).

Why Should You Care?

Insulin resistance is not just a precursor to diabetes. It is a central driver of nearly every major chronic disease process (10). When left unaddressed, it creates a cascade of downstream effects throughout the body:

• Stubborn weight gain, especially around the belly
• High blood pressure and unhealthy cholesterol levels
• Chronic low-grade inflammation (12)
• Hormonal disruption, including irregular cycles, PCOS, and low testosterone
• Increased risk of heart disease and stroke
• Liver stress and fatty liver disease
• Cognitive decline: insulin resistance has been linked to increased Alzheimer's risk (3)
• Depression and anxiety: blood sugar dysregulation doubles the risk of major depression (11)

The good news? Insulin resistance is highly reversible. Unlike many health conditions, this is one where lifestyle changes genuinely move the needle. You do not have to wait until you receive a diabetes diagnosis to take action. In fact, the earlier you address it, the better your outcomes (4).

What Causes It?

Insulin resistance does not have a single cause, rather it develops at the intersection of multiple factors, many of which are within your control:

• A diet high in ultra-processed foods, refined carbohydrates, and added sugars (12)
• Not enough movement, especially strength training
• Poor or insufficient sleep: even one bad night affects insulin sensitivity
• Chronic stress: elevated cortisol directly worsens blood sugar regulation
• An imbalanced gut microbiome: recent research shows your gut bacteria play a direct role in how your body processes glucose
• Exposure to environmental toxins and endocrine-disrupting chemicals
• Thyroid dysfunction or sex hormone imbalances
• Deficiencies in key nutrients like magnesium, vitamin D, and B vitamins

Rather than simply treating a number on a lab report, we look at the whole picture — your lifestyle, hormones, gut health, stress levels, and sleep quality — to understand why your metabolism is struggling and address it at the root (7)(9).

Ask Your Provider

One of the most frustrating things about insulin resistance is that standard lab work often misses it. A fasting glucose and hemoglobin A1c (HbA1c) alone are not enough to catch early metabolic dysfunction. At PHW, we can dig much deeper. Here are some conversations worth having at your next visit:

Blood Sugar & Metabolic Markers

• Fasting insulin level: one of the earliest signs of insulin resistance, often missed in conventional care, but assessed annually in your membership lab panel
• HOMA-IR: a calculation using your fasting glucose and insulin to estimate how resistant your cells are to insulin

Inflammation

• High-sensitivity CRP: a key inflammation marker elevated in over 65% of people with metabolic issues
• Homocysteine and uric acid

Hormones & Nutrients

• Full thyroid panel: thyroid dysfunction and insulin resistance are closely linked
• Sex hormones (estrogen, progesterone, testosterone, DHEA)
• Vitamin D, magnesium, and zinc: deficiencies in these nutrients worsen insulin resistance
• Cortisol patterns: chronic stress and poor cortisol regulation fuel metabolic dysfunction

You may have also heard of continuous glucose monitors (CGMs) — small, wearable devices that track your blood sugar in real time throughout the day. Even if you are not diabetic, a CGM can be an eye-opening tool for understanding how your meals, movement, stress, and sleep affect your glucose levels. Talk to your provider about whether one might be right for you.

What You Can Do Starting Today

You do not have to wait for a lab result to start improving your metabolic health. Here are the most impactful steps you can take right now, organized around our 5 Pillars of Health:

Nutrition

• Build your meals around whole foods: quality protein, healthy fats, fiber-rich vegetables, and minimally processed carbohydrates.
• Cut back on refined sugars and ultra-processed snack foods. These are the biggest drivers of insulin spikes.
• Try taking a 10-minute walk after meals. Research shows this significantly improves how your body handles blood sugar (5).

Movement

• Muscle is your most powerful metabolic organ. It accounts for up to 70% of how your body processes glucose.
• Strength training even 2–3 times per week makes a measurable difference in insulin sensitivity.
• Ask us about Transform Training, our sister company with N1-certified coaches who specialize in sustainable, personalized strength training for all experience levels.
• Daily walking is one of the simplest and most effective things you can do for your metabolic health.

Sleep

• Even one night of poor sleep reduces insulin sensitivity.
• Aim for 7–9 hours of quality sleep in a cool, dark room.
• If you are struggling with sleep, talk to your provider — this is one of the highest-leverage areas we can support.

Stress

• Chronic stress raises cortisol, which raises blood sugar, which worsens insulin resistance.
• Breathwork, nature, movement, and connection are all evidence-based ways to lower your stress response (8).
• Infrared sauna and red light therapy at Movement by PHW and our Hutchinson Clinic can support nervous system recovery and metabolic function.

Supplements That Support Metabolic Health

All of the following supplements are available through PHW and have meaningful research supporting their role in blood sugar regulation and insulin sensitivity. Ask your provider which one(s) might be right for your situation:

• Berberine: one of the most studied natural compounds for blood sugar support
• Magnesium: a critical cofactor in glucose metabolism; deficiency is extremely common
• Alpha-lipoic acid: antioxidant that improves the way cells respond to insulin
• NAC (N-acetyl cysteine): reduces oxidative stress and has been shown to lower fasting insulin levels
• Omega-3 fatty acids: reduce systemic inflammation and support healthy lipids
• Vitamin D3/K2: deficiency is strongly associated with insulin resistance
• CoQ10: supports the energy-producing structures inside your cells (mitochondria)
• Myoinositol MD: supports healthy glucose, insulin, and cellular metabolism

You are not broken. You are not stuck. You are capable of incredible change. We are here to walk alongside you every step of the way.