10 to 20 kg, according to the information of Minfukang. One meal a day will reduce the amount of food ingested by the human body and fundamentally block the circulation of sugar, fat, protein and carbohydrates into the body. Because sticking to one meal a month will lead to excessive hunger, glycogen metabolism and fat metabolism in patients will increase rapidly in a short time to supplement the lack of nutrition in the body, so they can lose weight 10 to 20 kg a month. But in the long run, this will lead to the lack of nutrition in the patient's stomach, so we should keep healthy while losing weight.