The hazards of drinking milk in the morning on an empty stomach are mainly two: 1, causing the loss of nutrients, resulting in a waste of nutrients; 2, causing the burden on the gastrointestinal tract, which can cause diarrhea in serious cases. Drinking milk in the morning on an empty stomach will make the milk metabolize rapidly in the body, and most of the protein, especially the protein that is very beneficial to the human body, will be consumed directly as calories, and lose its protein meaning, which cannot be directly turned into amino acids to be absorbed by the body. Drinking milk in an empty state will cause stimulation of the gastrointestinal tract, and it is easy to develop diarrhea and gastrointestinal disorders, especially some proteins in milk, which will be seriously decomposed and corrupted into substances harmful to the body, while increasing the metabolic burden of human toxins. It is recommended not to drink milk on an empty stomach for breakfast, including lunch and dinner as well.