Keto and HbA1c: How Long Does It Take to See Improvement?
Medical Disclaimer: This article is for informational purposes only. Always work with your GP or diabetes care team to monitor and interpret your HbA1c results.
HbA1c measures average blood glucose over the preceding 2–3 months. It is the gold-standard long-term marker of diabetes control. The ketogenic diet consistently improves HbA1c — often dramatically.
Studies show average HbA1c reductions of 1–2 percentage points in people with type 2 diabetes following ketogenic diets for 6 months. For context: a 1% reduction in HbA1c reduces microvascular complications by 37%.
Beyond HbA1c: Other Markers to Track
Fasting insulin, triglycerides, HDL cholesterol, and blood pressure all typically improve significantly alongside HbA1c on keto.