Coke is an out-and-out "drug": like all soft drinks, it is a 100% unnatural monster. Except for water, none of its ingredients are beneficial to the body, but it is obviously harmful-a can of coke contains seven teaspoons of white sugar, which will make people fat, decay teeth, turn sour, interfere with brain operation, and be emotionally unstable ... The disadvantages are endless. Coke contains various dyes and seasonings, which hinder the functions of various parts of the body. Carbonated drinks, such as soda and cola, contain almost no vitamins and minerals. The main ingredients are sugar, pigments, spices and carbonated water, and there are no nutrients except some calories. According to a survey conducted by Harvard University, teenagers, especially girls, who often drink a lot of carbonated drinks are three times more likely to have fractures than other teenagers. Researchers believe that the reason may be that phosphoric acid contained in carbonated drinks affects bone deposition and has side effects on bone growth. Apart from the hot weather, carbonated drinks have a good thirst quenching effect, which is hardly beneficial to people's health. Drinking more coke is mainly syrup and carbon dioxide gas, which is not nutritious to the body. Regular drinking of cola will not only lead to obesity, but also lead to dental caries, osteoporosis and heart disease. It is also a potential risk factor for modern diseases such as diabetes. Not to mention the harm of pigments, spices, caramel and other additives contained in cola to human body, only caffeine is a substance harmful to health. Coca-Cola and grapes are Hong Kong people's favorite drinks, but a survey by the School of Dentistry of the University of Hong Kong shows that if you drink three cans a day for many years, you may have a toothache. The School of Dentistry of the University of Hong Kong randomly sampled 20 kinds of paper-packed, canned and bottled beverages containing acidity and sugar, and found that 18 kinds of beverages had high acidity, which could dissolve tooth enamel, among which the acidity of cola and grapes was much higher than the index. The professor of dentistry pointed out that if you drink 1 liter of acidic and sugary drinks every day for 1 to 2 years, the enamel on the tooth surface will be corroded by acid. Prince Philip Dental Hospital receives nearly 20 complicated cases of teeth being corroded by acidic drinks every year. Some patients drink several cans or bottles of coke every day, and almost all the enamel that protects their teeth is corroded by acid. The pH value is between 1 and 14 degrees, and 7 degrees is neutral. If the acidity of the beverage is lower than 5.5pH, the enamel can be dissolved. Caffeine is a drug that can excite the central nervous system, heart and blood vessels and damage memory. In addition, for children, caffeine is irritating, which can stimulate gastric peristalsis and gastric acid secretion, causing intestinal spasm. Children who often drink coffee are prone to unexplained abdominal pain, and long-term excessive intake of caffeine can lead to chronic gastritis. Caffeine can dilate capillaries in gastrointestinal wall, stimulate renal function, increase renal water flow, lead to polyuria in children, increase calcium excretion, and affect children's bone development. At the same time, caffeine can also destroy vitamin B 1 in children, causing vitamin B 1 deficiency. A can of 355ml cola contains 65mg of caffeine, a can of 350ml oolong tea contains 80- 120mg of caffeine, and a cup of instant coffee contains 85-200mg of caffeine. Normal people should not consume more than 200 mg of caffeine every day, otherwise they may be chronically poisoned. Children should stay away from coffee and drink caffeinated drinks as little as possible. And some chemicals in cola, such as sodium, can raise blood pressure. Experts warn that high blood pressure will increase people's risk of heart disease, stroke and kidney disease, which cannot be ignored. Coke is really harmful to human body. 1. Coke contains caffeine, which is addictive if you drink it for a long time. 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. Nothing lacks nutrition like protein. 4. Long-term drinking will make you fat, because it contains sugar. In addition, when the carbonated beverage represented by cola was first introduced, because of its good taste, the gas produced could bring out the heat in the stomach, giving people a feeling of comfort and excitement. With drinking habits, people will have a certain dependence on carbonated drinks. Actually, carbonated drinks have no nutritional value. According to reports, all kinds of carbonated drinks are high in sugar, and long-term drinking can easily lead to obesity. Coke contains caffeine sodium, similar to caffeine, and also contains preservatives. These ingredients are not good for 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 for 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 coke. Cola contains caffeine, and 1 bottle of 340g cola beverage contains 50-80mg caffeine. Someone has done experiments. Adults who take caffeine more than 1 g at a time can cause central nervous system excitement, accelerated breathing, tachycardia, insomnia, dizziness and tinnitus. Even if the dosage of 1 time is less than 1 g, poisoning symptoms such as nausea, vomiting, dizziness, palpitation and precordial pain 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 prevent osteoporosis. Studies have shown that soda can accelerate bone loss, especially for girls who love to drink cola, and the fracture probability 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. Phosphoric acid is harmful to bones because it has adverse effects on calcium metabolism and bones. On the other hand, young girls who drink cola may have insufficient milk intake, which leads to calcium deficiency, so they are prone to fracture. Newlyweds should also be careful when drinking coke. 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 harm the brain, heart and other organs of the fetus, and also cause fetal malformation or congenital diseases. 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, lactating mothers can't drink cola drinks. Because caffeine will also enter the baby indirectly with milk, which is harmful to the baby's health. Old people shouldn't 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 and easily lead to osteoporosis and fractures. In addition, drinking too many caffeinated drinks will increase blood lipids and easily aggravate arteriosclerosis. Patients with hyperlipidemia and hypertension drink more alcohol, 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 mutagen. In order to avoid the above hazards, we should change the habit of smoking and drinking coke at the same time. Recently, the reporter learned that world-renowned soft drink manufacturers such as Coca-Cola and Pepsi-Cola have reached an agreement on125 this year to stop broadcasting beverage advertisements for children under 65,438+02 in the European market.