Macro partitioning
Individuals with muscle-specific insulin resistance (Impaired Glucose Tolerance, IGT) achieve greater metabolic improvements on a low-fat, high-fiber diet, whereas those with liver-specific insulin resistance (Impaired Fasting Glucose, IFG) respond better to a monounsaturated fat-enriched diet.
If you have insulin resistance, your specific metabolic defect determines which diet works best. If your blood sugar spikes after meals (Impaired Glucose Tolerance, often linked to muscle insulin resistance), a low-fat, high-fiber diet is likely superior. If your fasting blood sugar is high (Impaired Fasting Glucose, linked to liver insulin resistance), a diet emphasizing monounsaturated fats may be more effective. Standard generic diets often fail because they ignore this distinction.
Trouwborst and colleagues recently demonstrated that individuals with muscle-specific insulin resistance (IGT glycemic response) showed greater metabolic improvements on a low fat, high fiber diet compared to an isocaloric diet enriched in monounsaturated fat. Conversely, the same low-fat, high fiber diet was less beneficial for individuals with liver-specific insulin resistance (IFG glycemic profile), who were instead more responsive to the monounsaturated fat diet.
Why this rating
Based on a specific RCT (Trouwborst et al.) cited in a narrative review; strong mechanistic logic but limited to one cited study.
Source
Precision nutrition for targeting pathophysiology of cardiometabolic phenotypes
Chris E. Shannon et al. · Reviews in Endocrine and Metabolic Disorders · 2023
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