Keto diet and CGM: What your glucose level can look like and how to avoid reverse metabolic inflexibility
Dr. Susan Carter, MD: Endocrinologist & Longevity Expert
Feb 07, 2026 · 11 min read
On a ketogenic diet, CGM traces usually show a lower, flatter 24‑hour glucose curve, while a rare high‑carb meal can cause a higher peak and slower return to baseline because fat adaptation temporarily downshifts rapid glucose disposal (“reverse metabolic inflexibility”) rather than proving true insulin resistance. Learn how to interpret trends despite interstitial‑fluid lag and ...