If the body really needs the help of protein powder, drinking plenty of water will not cause side effects. On the contrary, it may cause stones and excessive calorie intake. Children who are too young should not eat protein powder. Protein ingredients are not suitable for young children and are not conducive to children's digestion and absorption. It is likely to cause vomiting, diarrhea or allergies after eating. While supplementing protein, we should also pay attention to supplementing carbohydrates, lipids, vitamins and minerals. Because the lack of these nutrients will not only affect the utilization and metabolism of protein, but also cause some diseases, which is very harmful to health. Protein powder can't be used blindly, only people who gain muscle or have other needs can eat it.