茶通常为各国人们常用的饮品 ,多数西方国家的人喜爱红茶加牛奶 ,而中国人通常饮绿茶或乌龙茶而不加牛奶。茶含多方面可影响人体的化合物4 0 0 0余种。最近研究证实茶与茶多酚对防止心血管病、动脉粥样硬化与癌症有许多有益作用 ,然而茶浸出物对骨矿物质密度 (ＢＭＤ)的影响人 Tea is commonly used by people from all over the world. Most western countries prefer black tea and milk, while Chinese people usually drink green tea or oolong tea without milk. Tea contains more than 400 species of compounds that affect the human body in many ways. Recent studies have confirmed that tea and tea polyphenols have many beneficial effects on the prevention of cardiovascular disease, atherosclerosis and cancer, whereas the effect of tea extract on bone mineral density (BMD)