Why Your Insulin Resistance Isn't Permanent (And How to Fix It)
Mark Hyman, MDPublished on October 26, 2026
Summary authored by editor@wellifi.com
TLDR Summary
Insulin resistance can be reversed through lifestyle changes, even when blood sugar levels appear normal. Key factors include monitoring insulin levels, improving diet, exercising regularly, and managing stress.
Key Points
- Insulin resistance can exist even with normal blood sugar levels.
- Fasting insulin and hemoglobin A1C are crucial metrics for assessing metabolic health.
- Dietary changes, regular exercise, and managing stress can help reverse insulin resistance.
Understanding Insulin Resistance: Can It Be Reversed?
Welcome back to Office Hours! Today, we're diving deep into a topic that affects millions: insulin resistance and its impact on blood sugar levels.
What Is Blood Sugar?
Blood sugar, or glucose, is the main sugar found in our blood. It’s a crucial source of energy for our bodies, broken down from the food we consume, especially from starchy foods and sugars. The pancreas releases insulin when we eat, allowing our cells to use glucose for energy. However, consistently high sugar intake can lead to insulin resistance, where the body requires more insulin to keep blood sugar levels normal.
The Hidden Danger of Normal Blood Sugar Levels
Many individuals receive blood sugar tests during annual check-ups, often with results labeled as “normal.” However, this can be misleading. Even with normal blood sugar, one can still be insulin resistant. In fact, insulin levels may be alarmingly high while blood sugar levels remain within the standard range. The body compensates for high sugar intake by producing more insulin, which can lead to long-term metabolic issues.
Key Indicators of Insulin Resistance
When evaluating metabolic health, it’s essential to consider more than just blood sugar levels. Key indicators include:
- Fasting Insulin: Should ideally be under 5; higher levels indicate insulin resistance.
- Hemoglobin A1C: Measures average blood sugar over three months; a level above 5.1 is concerning.
- Post-Meal Glucose: Should not exceed 110-120 mg/dL.
The Importance of Comprehensive Testing
Most standard medical panels do not include insulin testing, which is crucial for understanding your metabolic health. By working with services like Function Health, individuals can access comprehensive panels that include fasting insulin and other critical metrics.
How to Reverse Insulin Resistance
Reversing insulin resistance is entirely possible and often achievable without medication. Here are steps to consider:
- Dietary Changes: Focus on reducing or eliminating sugar and starches. Increase healthy fats, proteins, and fiber.
- Regular Exercise: Incorporate both aerobic and strength training exercises.
- Improve Sleep Quality: Ensure adequate sleep to help regulate hormones and metabolism.
- Manage Stress: Implement stress-reduction techniques to lower cortisol levels, which can negatively affect blood sugar.
Conclusion
Understanding insulin resistance and its implications on health is crucial for long-term wellness. Regularly monitor not only blood sugar levels but also insulin and other metabolic markers. By making informed lifestyle choices, you can take charge of your health and potentially reverse insulin resistance.
For more insights on maintaining optimal health, consider checking out Dr. Mark Hyman's latest book, which offers comprehensive guidance on living a healthy life.