Drinking more than three glasses of milk a day may not protect bones against breaking - and may even lead to higher rates of death, say researchers. A new study suggests certain types of sugars found in milk may increase inflammation and oxidative stress, which can damage body cells. But Swedish researchers said their study could not prove ‘cause and effect’ and much more research was needed before anyone would be advised to limit their milk consumption.

调研者称，每天喝三杯以上牛奶非但不会帮你预防骨折，还可能导致更高的致死率。一项最新的研究表明，牛奶中包含的特定糖类会增加炎症和氧化压力，损坏身体细胞组织。然而在确定这一调查结果之前，瑞典调查者认为还需要进行更多的调查。

Milk is recommended for cutting the risk of fractures because it contains calcium and vitamin D, which are vital for bone strength. However, there have been conflicting results from studies into the health benefits of milk in recent decades, with some showing it prevents heart attacks and strokes and others the opposite. Professor Karl Michaëlsson, Sweden, led a team to investigate whether the mechanism for potential harm was consumption of the sugars lactose and galactose found in high levels in milk, compared with much lower levels in other dairy products.

牛奶因其还有钙质和维生素D、可以预防骨折而被推荐饮用。然而近年来，牛奶的功效一直备受争议。有人认为牛奶可以预防心脏病和中风，而又有人对此持反对意见。瑞典乌普萨拉大学卡尔教授带领一个小组调查的内容就是：和其他乳制品相比，牛奶中乳糖和半乳糖含量较高，而这是否会对人体造成潜在危害。

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