Baby weight loss is considered to be at the anorexia stage, and may also be related to various factors such as malnutrition and zinc deficiency. 1. Anorexia, some babies may experience anorexia during growth and development, and eating less during anorexia may lead to this symptom. 2. Malnutrition, if you don’t pay attention to your baby’s nutritional supplements and eat too little, it may lead to this situation. 3. Zinc deficiency, if there is a lack of zinc in the baby’s body, it may affect the baby’s appetite, symptoms such as loss of appetite, so it will affect the absorption of nutrients, resulting in weight loss response. Baby weight loss may also have other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.