In the clinic, it is found that many parents of children currently have misconceptions about calcium supplementation, some should not be supplemented, resulting in rickets, which affects the development of children, while some are indiscriminately supplemented, the current trend of increasing the incidence of pediatric urinary stones, the cause is unclear, is it related to indiscriminate calcium supplementation? The following is a summary of some online knowledge, I hope it will be helpful to you. At present, the incidence of calcium malnutrition caused by vitamin D deficiency in preschool children in China is 50%, and the prevalence of pediatric rickets caused by this is more than 30%; the incidence of maternal hypocalcemia is 60%, and the prevalence of postpartum osteoporosis is more than 10%. The prevalence of osteoporosis in menopausal women is 40%. Some people, for commercial purposes, make a lot of hype in the media, promoting “universal calcium deficiency, universal calcium supplementation”, “the more calcium the better, calcium supplementation can cure all diseases”, so that the abuse of calcium supplements has become a fashionable consumption. The correct understanding of calcium supplements, do not follow the advertising. Don’t be confused by all kinds of loud calcium supplement trade names, remember that such commercial terms are pure hype and most do not exist in the field of nutrition. It is better to make a choice according to your needs. Don’t listen to exaggerated propaganda. For example, some calcium products advertised as “good deposition and fast absorption” make people believe that the absorption of calcium is a simple process, but in fact, calcium enters the body first into the bloodstream, then forms calcium-containing cells, and then penetrates the outermost hard layer of the bone through a complex process of change and is fixed to the bone inside. Another advertisement claims that their products “particles are several times smaller than normal products”, but in fact the size of the particles is only a physical change, and can not essentially improve the absorption rate of calcium in the human body, the current absorption rate of calcium in calcium supplement products is only about 30%, in fact there is no so-called “95% There is no such thing as a “95%” absorption rate. When choosing a calcium preparation, the first thing to look at is what percentage of calcium is in the preparation. For example, if you want to supplement 600mg of calcium, you only need 1500mg of calcium carbonate, 2717mg of calcium citrate, 4615mg of calcium lactate, 6667mg of calcium gluconate, and more than 5000mg of various amino acids. There are calcium preparations on the market that have a more complex molecular formula than calcium gluconate, and it takes 10 to 15 grams of the preparation to ingest 600mg, which is not possible. Some companies claim that their calcium preparations have a high rate of deposition in the bones, and here there is a question of the threshold for calcium deposition in the body. The general threshold for calcium in the body is 1,000 to 1,500 mg. Any more calcium intake will not raise the calcium threshold and therefore will not deposit more calcium. Special attention should be paid to two types of calcium preparations. The first is active calcium, which is made from the shells of oysters, mussels, and shells from the offshore after high temperature activation and fine grinding. This coastal mollusk has a strong ability to adsorb pollutants from the offshore, heavy metals such as lead and mercury. Therefore, there are heavy metals in this activated calcium, and the pH is high and alkaline, and the stomach and intestines will react after taking it. The second is the calcium preparation made from ground bones of domestic animals, which is also contaminated by heavy metals, especially lead, because they are easily deposited in the bones after taking it. These two types of calcium preparations, especially active calcium are the ones that should be eliminated. Children with weak gastrointestinal function should not choose calcium products with strong alkalinity, such as calcium carbonate and active calcium; they should not drink soft drinks and carbonated beverages at the same time as taking calcium products, so as not to reduce the absorption rate. Try to get enough calcium from natural foods by improving the structure of your diet. In the daily food of the family, there are milk, cheese, eggs, soy products, kelp, seaweed, shrimp, sesame, hawthorn, sea fish, vegetables and so on, which contain more calcium. Especially milk, every 100g of fresh milk contains 120mg of calcium, if each person drinks 250g of milk per day, it can provide 300mg of calcium; 500g of milk per day, it can supply 600mg of calcium; plus other foods in the diet supply about 300mg of calcium, it can fully meet the body’s need for calcium, it is worth noting that when eating these calcium-rich foods, should avoid It is worth noting that when consuming these calcium-rich foods, excessive consumption of foods rich in phosphate, oxalic acid and protein should be avoided to avoid affecting the absorption of calcium. Nowadays, it is advocated that children should have 4 cups of milk a day, which is less likely to cause calcium deficiency. Calcium supplementation is not the more the better, it is important to look at absorption. When taking more than 200mg of elemental calcium each time, the absorption rate will be reduced. Overdose of calcium products in children will inhibit the absorption of elemental zinc, so calcium supplementation for zinc deficient children should be based on dietary supplements. To test calcium levels, go to a regular hospital. The “single photon bone density tester” placed in pharmacies can only measure the ulna and radius of the arm, and the main danger of calcium loss is the lack of calcium in the lumbosacral vertebrae and hip bones, so this test is not accurate. Moreover, these instruments are radioactive sources, and their radiation will have an impact on the body. There is a misconception in the minds of many parents that children with excessive sweating, night terrors and sleep disturbances are “calcium deficient” and need calcium supplements immediately. In fact, those symptoms are not necessarily a lack of “calcium”, but may also be a lack of vitamin D. Except for newborns, which can cause convulsions due to a real calcium deficiency, the rest are first deficient in vitamin D, which leads to impaired calcium and phosphorus metabolism. Therefore, children should pay attention to the supplementation of vitamin D. The methods of supplementation include sun exposure and proper application of vitamin D preparations. According to scientific research reports, the prevalence of rickets in preschool children who take simple calcium preparations every day is basically the same as that in the group that does not take calcium preparations. Calcium products are not the more expensive the better, there is no big difference in the quality of calcium products in the market. Calcium carbonate has a high net calcium content and high absorption rate, and is a traditional calcium supplement, but it is not suitable for people with stomach acid deficiency; calcium phosphate has a high phosphorus content, but is not suitable for people with chronic renal insufficiency. However, it is important to remind that when taking calcium products with added vitamin D, it is important to prevent accumulation poisoning. Due to individual differences in children, not all children are both calcium and vitamin D deficient at the same time, some people taking vitamin D for a long time may inhibit the formation of their own vitamin D in the body, or cause the accumulation of vitamin D intake and poisoning, the symptoms of poisoning are hypercalcemia caused by liver and kidney function damage and soft tissue calcification, manifested as loss of appetite, unresponsiveness, cardiac arrhythmia, respiratory distress, nausea and vomiting, thirst, polyuria, constipation. The symptoms of hypercalcemia include loss of appetite, unresponsiveness, cardiac arrhythmia, dyspnea, nausea and vomiting, thirst, polyuria, constipation, etc. Patients with some diseases should take calcium supplements under medical supervision. Studies have found that improper calcium supplementation in heart patients can lead to personal accidents due to calcium deposition. In addition, patients who are taking hormonal drugs such as thyroid hormones and corticosteroids should consult their doctor first when taking calcium supplements, as calcium and such drugs may interact and cause adverse effects on the body.