A keto or low-carb diet emphasizes reducing carbohydrate intake while increasing fats and moderate protein consumption. The goal is to enter a metabolic state called ketosis, where the body burns fat for energy instead of carbohydrates. This diet typically includes high-fat foods like avocados, nuts, seeds, dairy, and oils, while limiting grains, sugars, fruits, and starchy vegetables. It has gained popularity for its potential to promote weight loss, improve blood sugar control, and enhance mental clarity. However, it requires careful planning to ensure nutritional balance and avoid deficiencies.