Insulin resistance occurs when your body’s cells do not respond normally to insulin.
Insulin is a hormone made by your pancreas that helps move glucose (sugar) from your bloodstream into your cells where it is used for energy.
When insulin resistance develops:
Insulin resistance often develops years before diabetes is diagnosed and is considered one of the main drivers of prediabetes, Type 2 diabetes, and metabolic syndrome.
Many people with insulin resistance have no symptoms.
Insulin resistance is very common.
Millions of Americans have insulin resistance, often without knowing it.
It is frequently associated with:
Many people may have insulin resistance for years before abnormal blood sugar levels are detected.
Many people experience no symptoms.
Possible signs include:
Common Findings
Physical Signs
Associated Conditions
There is no single test that definitively diagnoses insulin resistance in routine clinical practice.
Providers often diagnose insulin resistance using a combination of:
Insulin resistance is commonly suspected when patients have:
The exact cause is not always known, but several factors increase risk.
Common Causes
Over time, insulin resistance causes the pancreas to work harder to produce additional insulin.
Insulin resistance may worsen if you:
You may reduce your risk by:
The following video content is provided to help you better understand this condition. These resources are intended for educational purposes and should not replace personalized medical advice from your healthcare provider.
What It Measures
Average blood sugar over approximately 2–3 months.
Why It Matters
Helps identify prediabetes and diabetes resulting from insulin resistance.
Monitoring Frequency
Typically every 6–12 months or as recommended.
What It Measures
Blood sugar after fasting for at least 8 hours.
Why It Matters
Elevated results may indicate insulin resistance or prediabetes.
| Result | Meaning |
| Less than 100 mg/dL | Normal |
| 100–125 mg/dL | Prediabetes |
| 126 mg/dL or higher | Diabetes |
What It Measures
The amount of insulin circulating in your bloodstream.
Why It Matters
Higher insulin levels may suggest insulin resistance.
Monitoring Frequency
Not routinely performed for everyone but may be ordered by some providers.
What It Measures
Why It Matters
Insulin resistance often causes:
What It Evaluates
High blood pressure, which commonly occurs with insulin resistance.
Why It Matters
Increases cardiovascular risk.
What It Evaluates
Abdominal fat distribution.
Why It Matters
Excess abdominal fat is strongly associated with insulin resistance.
What It Evaluates
Possible sleep apnea.
Why It Matters
Sleep apnea can worsen insulin resistance and increase diabetes risk.
Treatment focuses on improving the body’s response to insulin.
Options may include:
Lifestyle changes are the most effective treatment for insulin resistance.
Weight Loss
Losing 5–10% of your body weight can significantly improve insulin sensitivity.
Physical Activity
Aim for:
Exercise helps muscles use insulin more effectively.
Healthy Eating
Focus on:
Limit:
What It Does
Improves insulin sensitivity and reduces glucose production by the liver.
Common Side Effects
Important Safety Considerations
Often prescribed for patients with prediabetes, PCOS, or significant insulin resistance.
Examples:
What They Do
Common Side Effects
Important Safety Considerations
Not all patients require medication.
There are no procedures specifically used to treat insulin resistance.
May be considered for patients with severe obesity.
Benefits
Learn More
Without treatment, insulin resistance may lead to:
Many patients experience significant improvement through lifestyle changes.
You can:
Even small lifestyle changes can improve insulin sensitivity.
No. Insulin resistance often occurs before diabetes develops.
Yes. Insulin resistance often develops years before blood sugar becomes abnormal.
It can contribute to weight gain and make weight loss more difficult.
Yes. Physical activity is one of the most effective ways to improve insulin sensitivity.
Not necessarily. Many people prevent diabetes through lifestyle changes and early treatment.
You may be referred to:
Insulin resistance is often reversible or significantly improvable.
Many patients see substantial improvement through:
Some individuals may return to normal blood sugar levels and no longer show signs of insulin resistance.
Insulin resistance itself is usually not an emergency.
Seek immediate medical attention if you experience:
Call 911 for life-threatening symptoms.
CALL 911
APNS does not provide emergency medical services. If you believe you are experiencing a medical emergency, including (but not limited to) chest pain, difficulty breathing, stroke symptoms, severe allergic reactions, anaphylaxis, uncontrolled bleeding, seizures, loss of consciousness, or any other potentially life-threatening condition, you are instructed to call 911 immediately or go immediately to the nearest emergency department.
This information is for educational purposes only and should not replace medical advice, diagnosis, or treatment from a licensed healthcare provider. Always follow the recommendations of your healthcare provider. If you experience severe or worsening symptoms, seek medical attention promptly.
At APNS, our providers take the time to understand your condition and your goals. We offer comprehensive telehealth visits at a fixed rate — no membership fees, no insurance required, and no unexpected charges. Whether you’re newly diagnosed or looking for a provider who actually listens, we’re here to help.
