现代医学研究认为,牛奶不仅钙的含量高(104～114毫克/100克),而且所含钙易被人体所吸收,是人体钙的重要来源。从儿童到老年,坚持每天喝牛奶,既有利于儿童骨骼及牙齿发育,又能有效预防老年骨质疏松症。近年来,随着我国人民生活水平的提高,预防保健意识的增强,喝牛奶的人越来越多,尤其是城市老年人。喝牛奶有益健康,但必须严格把好牛奶质量关。为确保牛奶的质量,除对奶牛进行严格的检疫,对牛 Modern medical research suggests that milk contains not only high levels of calcium (104 to 114 mg / 100 g) but also calcium, which is easily absorbed by the body and is an important source of calcium in the body. From children to the elderly, insist on drinking milk every day, is conducive to the development of children’s bones and teeth, but also effective prevention of osteoporosis in the elderly. In recent years, with the improvement of people’s living standard in our country, the awareness of preventive health care has been enhanced, and more and more people drink milk, especially in the urban elderly. Drinking milk is healthy, but you must strictly control the quality of the milk. In order to ensure the quality of milk, in addition to the strict quarantine of cows, the cattle