Eating without absorption and body wasting may be caused by genetic factors, lactose intolerance, gastrointestinal diseases, parasitic infections and other factors. It is recommended to have a reasonable diet, go to the hospital to understand the cause, and give general treatment and medication and other methods. 1. Genetic factors: This condition may occur under the influence of genetic factors. It is recommended to increase physical exercise, and if necessary, give gastrointestinal tablets, which can promote digestion and absorption. 2. Lactose intolerance: Lactose intolerance may be due to the lack of lactase enzyme, which can cause diarrhea and lead to body wasting. It is recommended to give probiotic preparations and lactase preparations under doctor’s guidance to regulate, which can help to improve. 3. Gastrointestinal diseases: Gastrointestinal diseases such as gastritis, gastric ulcer, duodenal ulcer and so on can also lead to weight loss, it is recommended to make a clear diagnosis, and give digestive enzymes, omeprazole, bismuth potassium citrate and other medicines under the guidance of the doctor to regulate. 4. Parasitic disease: parasites will absorb the nutrition of the human body, leading to body wasting, it is recommended to combine with the doctor’s advice, give albendazole deworming treatment. Eating does not absorb the body wasting, but also pay attention to diet regulation, increase protein, fat food intake. If necessary, go to the hospital, if it is caused by pathological factors, but also targeted to give the appropriate drug treatment.