The persimmon is high in carbs and contains a negligible amount of fat and protein. A 3.5ounce portion has 33.5 grams of carbs, 0.4 grams of fat and 0.8 grams of protein. Carbs, fat and protein are all essential nutrients that play different roles in your body. Carbs are your bodys primary source of energy and are used to fuel physiological functions as well as physical activity. Fat helps you absorb fatsoluble vitamins and provides cushioning for your organs. Protein is used to make hormones and enzymes and repair tissue.