A ketogenic diet, you’ll also hear people refer to it as “keto”, is a high-protein, usually high fat, and very low-carbohydrate diet plan. You might have heard of the Atkins Diet that was all the rage in the 2000s. Atkins is an example of a ketogenic diet. These diet plans are called “keto” because they are designed to put your body into a state of ketosis. Ketosis means that you are burning stored fat for fuel. It also turns fats into ketones in the liver, which fuel the brain.