Why Neuropathy Isn’t Just About Blood Sugar
From The Metabolic Classroom with Dr. Ben Bikman by Insulin IQ
May 4, 2026 · 23 min · Episode 148
About this episode
Dr. Ben Bikman explains the complex causes of peripheral neuropathy beyond just high blood sugar, focusing on insulin resistance and glycemic variability.
Topic: Peripheral neuropathy is not caused by high glucose alone, but by the combined effects of hyperglycemia, insulin resistance, and glycemic variability. Protecting nerves requires improving insulin sensitivity and reducing glucose swings—not just lowering A1C. Summary: Ben explains why peripheral neuropathy is not simply a “high blood sugar” problem. While hyperglycemia clearly damages nerves, the story is more complex—especially in type 2 diabetes, where intensive glucose control does not prevent neuropathy nearly as well as it does in type 1 diabetes. Dr. Bikman argues that neuropathy is driven by three interacting metabolic forces: chronic hyperglycemia, insulin resistance, and glycemic variability. He begins by defining peripheral neuropathy as damage to the nerves outside the brain and spinal cord, most commonly appearing first in the feet and toes because the longest nerves are often affected earliest. He then explains how excess glucose damages nerves through the sorbitol pathway, oxidative stress, glycation, and inflammation. But glucose is only one part of the problem. The second pillar is insulin resistance. Peripheral nerves and their support cells, especially…
People in this episode
Host: Dr. Ben Bikman
Topics covered
- peripheral neuropathy
- insulin resistance
- glycemic variability
- hyperglycemia
- nerve damage
Keywords
- peripheral neuropathy
- insulin sensitivity
- hyperglycemia
- glycemic variability
- nerve damage
Mentioned in this episode
Organizations: Insulin IQ
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