Share on Pinterest Is a keto diet or a Mediterranean diet better for blood sugar control, gut health, and weight loss? Design by MNT; Photography by CWP, LLC/Stocksy & Nadine Greeff/Stocksy.

Keto is a high-fat, high-protein, and low-carb diet dating back to the 1920s when it was first used to help control seizures in people with epilepsy, according to the National Library of Medicine.