After eating a lot of cold drinks, the blood vessels in the gastrointestinal tract contract sharply due to cold stimulation, and the blood flow will be further reduced, resulting in gastrointestinal dysfunction, abdominal pain, diarrhea and other symptoms. Eating too many cold drinks will dilute the gastric juice, affect the digestion ability of the stomach, stimulate the intestine and accelerate the peristalsis of the intestine, thus shortening the time of food staying in the small intestine and affecting the absorption of nutrients in food by the human body. Especially people with acute and chronic gastrointestinal diseases should eat less or not eat cold drinks. Besides, eating a lot of cold drinks can also cause headaches, sore throats and coughs.
The sugar content of cold drinks is very high, and sugar consumes a lot of vitamins in the process of metabolism. Drinking a lot of cold drinks can lead to vitamin deficiency in children. At the same time, it will reduce the secretion of saliva and digestive juice, cause loss of appetite and affect normal diet. Over time, children will have problems of unbalanced nutrition and excess calories. Moreover, cola drinks usually contain a certain amount of caffeine, which has an exciting effect on the central nervous system and is very harmful to children who are still in the growth and development stage, so children should not drink more cola drinks.