Coke contains caffeine and it is addictive to drink for a long time. 2. Coke contains carbonic acid, and drinking too much is bad for your health. Because the human body is at its best when it is weakly alkaline. 3, there is nothing like protein, lacking nutrition. 4. Drinking it for a long time will make you fat, because it contains sugar. 5. In addition, when carbonated drinks represented by cola were first introduced, because of their good taste, the gas produced could bring out the heat in the stomach, giving people a feeling of comfort and excitement. After drinking habits, people will have a certain dependence on carbonated drinks. In fact, carbonated drinks have no nutritional value. According to reports, the sugar in all kinds of carbonated drinks is high, and long-term drinking can easily lead to obesity. Coke contains sodium caffeine, which is similar to caffeine, and also contains preservatives. These ingredients are not good for your health and have no nutritional value. Drinking these drinks for a long time will definitely cause problems. Experts suggest that you should drink carbonated drinks as little as possible, especially children, women and the elderly, and it is best not to drink them. "In fact, the best drink in China is our national drink-tea, especially green tea. Even drinking boiled water is better than drinking carbonated drinks. " It is harmful for children to drink cola. Coke contains caffeine, and 1 bottle of 340g cola beverage contains 50 ~ 80mg caffeine. Some people have done experiments. Adults who take caffeine 1 g or more at a time can cause central nervous system excitement, rapid breathing, tachycardia, insomnia, dizziness and tinnitus. Even if 1 time is less than 1 g, nausea, vomiting, dizziness, palpitation, precordial pain and other poisoning symptoms will occur due to the stimulation of gastric mucosa. Children are more sensitive to caffeine than adults, so don't give them cola drinks. Young girls drink cola to guard against osteoporosis. Studies have shown that soda can accelerate bone loss, especially for girls who love cola, and the probability of fracture is five times that of those who don't drink soda! Experts pointed out that phosphoric acid in cola may be the cause of easy fracture, and phosphoric acid is harmful to bone, because phosphoric acid has adverse effects on calcium metabolism and bone. On the other hand, young girls who drink cola may have insufficient milk intake, which makes their bodies lack calcium, so they are prone to fracture. Newlyweds should also drink coke carefully. Because most cola drinks contain high content of caffeine, caffeine can easily enter the fetus through the absorption of placenta in the body, which will endanger the brain, heart and other organs of the fetus, and also cause malformation or congenital diseases of the fetus. Therefore, experts suggest that newlyweds and couples who want to have children should not drink cola drinks except smoking. Even after the baby is born, nursing mothers can't drink cola drinks. Because caffeine can also enter the baby indirectly with milk, which is harmful to the baby's health. Old people should not drink coke. Cola has diuretic effect, which can reduce the absorption of calcium by half. Old people often drink caffeinated drinks, which will aggravate the lack of calcium in the body, cause osteoporosis and fracture easily. In addition, drinking too many caffeinated drinks will increase blood lipids and easily aggravate arteriosclerosis. Patients with hyperlipidemia and hypertension will drink more, which will accelerate the deterioration of their condition. For smokers, caffeine can easily mutate some tissues of the body and even lead to cancer cells under the action of nicotine mutagens. In order to avoid the above hazards, we should change the habit of smoking and drinking cola at the same time. Recently, the reporter learned that world-renowned soft drink manufacturers such as Coca-Cola and Pepsi have reached an agreement on 1 25 this year to stop advertising drinks for children under 12 in the European market.