Vegan and vegetarian diets have a positive effect on glycemic control in people with diabetes
Current scientific literature indicates that vegan and vegetarian diets can have a beneficial impact on glycemic control, helping to reduce blood sugar levels and improve insulin sensitivity in individuals with diabetes.
The retrieved papers consistently support the claim that vegan and vegetarian diets (plant-based dietary patterns) positively impact glycemic control, insulin sensitivity, and HbA1c levels in people with diabetes. No papers refute this claim.
Malak S. Alharbi, Waleed I. Albalawi, Faisal F. Jumah, Abdulrhman M. Al-Qarni, Meshari S. Alashjaee, Ahmed Aljabri, Mohammed M.H. Al-Gayyar. The Effect of a Vegan Diet on the Health Indicators and Outcomes of Patients with Type 2 Diabetes Mellitus. 2025. https://doi.org/10.2174/0115733998313114240611102335
Reviews evidence demonstrating that vegan diets are linked to increased insulin sensitivity and reduced blood sugar levels in type 2 diabetes patients.
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Correia PE, Teixeira PP, Martins BB, Porepp OC, Kunzler LB, Natividade GR, Ferrari GT, Spiazzi BF, Colpani V, Gerchman F. Effect of partial replacement of animal protein with plant protein on glycemic control in type 2 diabetes: Rationale, design, and protocol of a randomized clinical trial.. 2026. https://doi.org/10.1016/j.clnesp.2026.103411
Notes that plant-based dietary patterns improve glycemic control and cardiometabolic health in type 2 diabetes.
Frigo F, Fasching P, Brath H. Plant-Based Nutrition and Type 2 Diabetes Mellitus: Prevention, Risk, Metabolic Health and the Role of Legumes, Dietary Fiber, and Red Meat. 2026. https://doi.org/10.20944/preprints202607.1849.v1
Highlights that adherence to healthy plant-based diets is consistently associated with improved insulin sensitivity and significant reductions in HbA1c.
Caretto A, Zanardini A, Frontino G, Pedone E. Targeting Insulin Resistance Through Nutrition: Pathophysiological Insights and Dietary Interventions.. 2026. https://doi.org/10.3390/nu18071119
Reports that plant-based diets improve insulin resistance primarily via weight loss and gut microbiota modulation.
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