According to relevant data, there are currently about 90 million patients with osteoporosis in China, including about 70 million women. Calcium supplementation and prevention of osteoporosis are receiving increasing attention. In daily life, many people have heard of claims such as "drinking bone soup can supplement calcium", "eating more meat and shrimp can supplement calcium", and "coffee can cause osteoporosis". Are these statements correct? October 20th is World Osteoporosis Day, and researcher He Li from the Institute of Nutrition and Health at the Chinese Center for Disease Control and Prevention will unveil the truth about diet and bone health for everyone. The calcium concentration of bone soup is very low. When it comes to calcium supplementation, many people believe that "what you eat supplements what you eat". Therefore, it is natural to think that gnawing on bones or drinking bone soup can supplement calcium. Regarding this, Researcher He Li stated that although calcium is the main component of bones, it is difficult for calcium in animal bones to dissolve into soup. Research has found that the calcium concentration in bone soup made with purified water does not exceed 4mg/100ml, and is even lower than tap water. If you want to achieve the goal of calcium supplementation, it is recommended to increase calcium intake through a reasonable diet or calcium supplements, and prioritize natural high calcium foods such as dairy products, soy products, etc. Diversified combinations are easier to meet the standard. The calcium supplement effect of shrimp skin is not obvious, and some people believe that eating more meat and shrimp skin can supplement calcium. Although shrimp skin is rich in calcium, its absorption rate is not high, and it also contains a large amount of salt, which cannot be consumed in large quantities by humans. The effect of calcium supplementation is minimal. Moreover, excessive intake of salt can accelerate urinary calcium excretion, and a long-term high salt diet can exacerbate calcium loss and increase the risk of osteoporosis. So, can eating meat supplement calcium? Researcher He Li pointed out that high-quality protein, phosphorus, and vitamin A in meat play an important role in bone health, but the calcium content in livestock and poultry meat is generally low. Although aquatic products have a high calcium content, the intake of aquatic products, especially seafood, by Chinese residents is generally insufficient. Therefore, the effect of supplementing calcium by eating meat is limited. Knowledge tip: The average calcium content of common foods (mg/100g) is 991mg for shrimp skin, 620mg for sesame seeds, 164mg for tofu, 104mg for milk, and 56mg for eggs. The statement that moderate carbonated drinks do not harm calcium and "carbonated drinks contain phosphorus and can harm bones" is common, but not absolute. The core lies in whether the "intake" is reasonable. Phosphorus is also an essential mineral for bone health, and the calcium phosphorus ratio in human bones is usually maintained at around 2:1. Although carbonated beverages such as cola contain phosphorus, a 330ml can of cola contains about 33 milligrams of phosphorus, which is lower than the phosphorus content of one liang of lean pork (about 100 milligrams) or one egg (about 50 milligrams), and far from reaching the "excessive" standard. Therefore, for most age groups and healthy individuals, moderate consumption of carbonated beverages will not result in calcium loss due to phosphorus content. Milk is often used as a food for daily dietary calcium supplementation. It is indeed a high-quality source of calcium, but if it is regarded as the "only key" source of nutrition for preventing osteoporosis and other factors are ignored, the effect will be greatly reduced. Experts say that even if you drink too much milk, if your body lacks vitamin D, calcium cannot be effectively absorbed and utilized, which is equivalent to "white supplementation". The relationship between caffeine and bone health is still a topic of ongoing research in countries around the world, and there is no consensus on coffee induced osteoporosis. Researcher He Li stated that there is currently no evidence to suggest that moderate coffee consumption directly leads to osteoporosis. But oxalic acid and caffeine in coffee do have some connection with "calcium": oxalic acid may hinder calcium absorption, while caffeine increases urinary calcium loss. However, the key lies in the quantity. Research has found that there is no significant difference in the risk of osteoporosis between normal individuals who drink moderate amounts of coffee per day (such as 2 cups, containing around 200mg caffeine) and those who do not drink coffee. (New Society)