A ketogenic (keto) diet is a high-fat, low-carbohydrate eating plan designed to shift your body into a state of ketosis. In ketosis, your body primarily burns fat for energy instead of carbohydrates. The typical macronutrient ratio for a keto diet is around 70-80% fat, 5-10% carbohydrates, and 10-20% protein. This reduction in carbs forces your body to break down fats into ketones, which can be used as a source of energy for the body and brain. Keto diets are often used for weight loss and can have potential health benefits.