In this randomized clinical trial, a low-carbohydrate dietary intervention led to improvements in glycemia in individuals with elevated HbA1c not taking glucoselowering medication, but the study was unable to evaluate its effects independently of weight loss. This diet, if sustained, might be a useful dietary approach for preventing and treating type 2 diabetes, but more research is needed.
Effects of a Low-Carbohydrate Dietary Intervention on Hemoglobin A1c: A Randomized Controlled Trial
References:
Dorans (2022). “Effects of a Low-Carbohydrate Dietary Intervention on Hemoglobin A1c: A Randomized Controlled Trial.” JAMA Open