How many apples a day is appropriate, mainly depends on their own preferences and physical tolerance, from the medical and nutritional point of view, a day to eat 1 ~ 2 medium-sized apples is good. Nutrient content of 100 grams of edible part of apple (average value) calories 52 kcal, protein 0.2 grams, fat 0.2 grams, 12.3 grams of carbohydrates, dietary fiber 1.2 grams, magnesium 4 mg, vitamin C 4 mg, potassium 119 mg and so on. It also contains some iron, zinc, phosphorus and other trace elements, rich in nutrients, suitable for human consumption. It is recommended to consume according to your own preference and physical condition, usually about two is appropriate. It is not recommended to consume too much, because it is not good to consume too much of any food, and it is necessary to achieve a balanced nutrition, and it is better to match with various kinds of food.