1, affecting the absorption of iron and calcium

Carbonic acid and phosphoric acid can reduce the absorption of calcium in the body and affect the normal development of bone growth and height. Children and adolescents in the growth and development period need sufficient calcium to make bones grow and develop normally, maintain good bone metabolism, and achieve the best bone density, so it is even more inappropriate to drink carbonated drinks.

In addition, carbonic acid and phosphoric acid will also hinder the absorption of iron, which is one of the main materials for making blood. Once iron is not enough, it will cause iron deficiency anemia. Children and adolescents who are growing rapidly also need enough iron to make blood quickly. Especially adolescent girls, the demand for iron is higher, so girls who love to drink carbonated drinks are more prone to iron deficiency anemia.

2, high heat

Coke contains a lot of sucrose, so it is extremely high in calories, and there are almost no other nutrients. If you drink it regularly, many a mickle makes a mickle, which will increase your weight and make you easy to develop a bad eating habit of being sweet. Drink instead of drinking water. In addition, sugar has a bad effect on dental health.

3. Caffeine is not good for health.

Caffeine can stimulate heart muscle contraction and accelerate heartbeat and breathing; It will stimulate gastric acid secretion and harm the stomach; It has diuretic effect, and the elderly are prone to dehydration; Drinking it for a long time will be addictive. Once you don't drink it, you will feel uncomfortable, listless or have a headache.

If you drink too much for a long time, that is, caffeine exceeds 200 mg per day, you will have chronic poisoning phenomena such as indigestion, headache, insomnia, nervousness, trembling, irritability and rapid heartbeat. The caffeine content in all kinds of colas is relatively high, and the caffeine content in one can of colas is above 60 mg. Therefore, if you drink more than three cans of colas every day, chronic caffeine poisoning will easily occur for a long time.