Drinking too much milk will lead to osteoporosis. The elderly should take proper amount of protein

The US Department of health and Harvard Medical School have published a report that eating too much dairy products and protein is one of the causes of osteoporosis The relationship between osteoporosis and animal protein is in direct proportion, that is to say, the more meat and animal protein you eat, the higher the risk of osteoporosis Protein intake of the elderly should be moderate Protein and amino acid are important raw materials for the synthesis of bone organic matter, but high protein diet can reduce the re absorption rate of calcium in renal tubules, increase the excretion of calcium in urine, double the intake of protein, and increase the excretion of calcium in urine by 50% The intake of excess protein will increase the negative calcium balance (when the absorption of calcium in the human body is less than the excretion of calcium, it is called the negative calcium balance state) In the old age, due to the decline of tissue and organ function and the acceleration of bone calcium loss, the absorbed calcium can not compensate the excreted calcium, and the body is easy to be in a negative calcium balance state At this time, in order to ensure the normal play of physiological function, the body must use the calcium in the bone bank to maintain the calcium balance in the body Although the daily use of bone calcium is negligible, but slow and continuous use will eventually lead to bone calcium deficit, osteoporosis, fracture and other pathological changes However, the lack of long-term protein intake will also lead to the lack of bone matrix synthesis, the backward formation of new bone, and osteoporosis, therefore, appropriate protein diet should be taken The more animal protein you drink, the faster calcium you lose The absorption of calcium is relative to that of phosphorus The calcium content of milk is 3-4 times higher than that of human milk The problem is that the phosphorus content of milk is too high, which affects the absorption of calcium Although the calcium content of human milk is not as high as that of milk, the phosphorus content of human milk is very low Compared with human milk, drinking human milk can absorb more calcium It is worth noting that many processed foods, such as instant noodles, contain a lot of phosphorus, which will affect the absorption rate of calcium Daily intake of protein The protein requirement of human body is only about 0.75g for 1kg body weight For a person weighing 60kg, only 45g is enough every day Any piece of meat, an egg and a large glass of milk may be excessive According to the research, the daily calcium requirement of human body is about 150-200 mg Most of the world's population takes about 300-500 mg every day The World Health Organization (who) recommends 400-500 mg The National Health Organization of the United States even recommends 1000-1500 mg The amount recommended by the official organization of the United States is so high It is precisely because their people have osteoporosis The disease is the most serious.