Keto and Paleo are very popular diets where the majority of calories come from healthy fats. Carbohydrates such as flour, sugar, bread, pasta, beans, potatoes and rice are strictly forbidden on KETO, with 20-50 grams of carbs being obtained through non starchy veggies. PALEO has more grace for carbs, but only allows whole foods, no grains, and no dairy. Paleo also leans toward higher portions of protein.