The keto diet is a low-carb, high-fat diet that resembles the Atkins and low-carb diets. It involves lowering carbohydrate intake and substituting fat, which causes the body to enter a metabolic state called ketosis where it burns fat for energy and converts fat into ketones to provide energy to the brain. Ketogenic diets can significantly lower blood sugar and insulin levels, offering some health advantages. A ketogenic diet can help with weight loss and reduce disease risk, potentially being as effective as a low-fat diet for weight loss without needing to count calories. Research found the ketogenic diet resulted in slightly more weight loss than a low-fat diet along with lower blood pressure and lipid levels.