The ketogenic (keto) diet is a low-carbohydrate, high-fat diet that has gained significant attention for its health benefits, particularly for weight loss, mental clarity, and metabolic health. The primary goal of the keto diet is to shift the body's energy source from carbohydrates (glucose) to fat, leading to a metabolic state called ketosis . Key Concepts: A. Ketosis : When the body is in ketosis, it begins to burn fat for fuel instead of carbohydrates. The liver produces ketones, which are used as an alternative energy source by the brain and body. B. Macronutrient Ratio : A typical ketogenic diet is made up of 70-75% fats, 20-25% protein, and only 5-10% carbohydrates. The exact breakdown can vary depending on individual goals, but the focus is always on minimizing carbs and maximizing fats. C. Foods to Eat : The foundation of the keto diet is high-fat foods such as meats, fish, eggs, cheese, avocados, oils, nuts, seeds, and low-carb vegetables like leafy greens and cruciferous vegetables (e.g., broccoli, cauliflower). D. Foods to Avoid : Carbohydrate-rich foods, including grains (bread, pasta), most fruits (except berries in moderation), sugar, starchy vegetables (potatoes, corn), and processed foods should be avoided or minimized.