喝茶增加骨密度？

hxq2007

Drinking Tea May Slow Bone Loss
Study Shows Elderly Tea Drinkers Have Higher Bone Density

A new study shows elderly women who drank tea had higher bone density in their hips and less bone loss than women who didn't drink tea.

Researchers say the results confirm previous studies that have suggested drinking tea may protect against bone loss and osteoporosis.

In the study, Australian researchers surveyed 275 women between the ages of 70 and 85 who were participating in a larger five-year study of calcium supplements and osteoporosis about how much black and green tea (but not herbal teas) they drank. Bone density measurements of the hip were also taken at the beginning and end of the five-year study.

The results, published in The American Journal of Clinical Nutrition, showed that women who were regular tea drinkers had higher bone density in two sites in the hip compared with non-tea drinkers.

The bone mineral density in tea drinkers was higher than in non-tea drinkers. Tea drinkers also had less loss of bone density over a four-year period compared with non-tea drinkers. These results took into account factors such as smoking history and use of calcium supplements.

The researchers did not find a relationship between the number of cups of tea consumed per day and bone mineral density.

\"Other variables, such as dietary calcium and coffee intake, physical activity, and smoking did not appear to be important confounders of the relation between tea and [bone density],\" write researcher Amanda Devine, of the University of Western Australia in Perth, Australia, and colleagues. \"Thus, overall our data support the concept that tea intake has beneficial effects on bone structure by reducing bone loss.\"

Researchers say more research is needed to determine how drinking tea affects bone density. Previous studies have suggested that phytochemicals in tea, such as flavonoids, may be responsible for the protective effect against bone loss due to their estrogen-like properties.

lixxkk

我来翻译一下。^_^，粗略的翻译。请各位指教。
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喝茶可能减慢骨骼的衰退
研究表明年长饮茶者骨密度更高。
一项新的研究显示那些喝茶的年长女性髋骨骨密度比那些没有喝茶习惯的妇女高。
研究人员表示，这个研究结果证明了一项以前的旨在建议人们喝茶去抵抗骨骼衰退以及骨质疏松证的研究。
在这项研究中，澳大利亚的研究者观察了年龄在70至85之间的275个女性测试者。这些试验者参与了长达5年的旨在研究钙吸收和骨质疏松与红茶或者绿茶饮用两者之间关系的大型研究。
研究的结果刊登在美国临床营养学杂志上。结论是茶的经常饮用者在髋骨骨密度比那些不喝茶的人高两个点。
除此之外，在这4年里，茶饮用者在骨密度的降低速度上也比那些未饮用者慢。这个结果排除了譬如吸烟、服用外在钙制品的影响因素。
但是研究者并没有发现茶一天饮用量与骨密度之间存在必然联系。
“其他一些变数，例如饮食中的钙和咖啡的饮用，体力活动，和吸烟在饮茶和骨密度之间关系的研究中中并没有出现显著的影响。”来自澳大利亚佩斯的澳大利亚西部大学的研究者阿曼达戴文和她的同事们在论文中写到：“因此，总体上我们数据支持了在阻止骨骼衰退时，茶能起到良好效果的观点。
研究者也指出，在研究喝茶怎么影响骨密度方面还需要做很多研究工作。先前的研究暗示：茶中的化学成分，例如类黄酮，可能在抵抗骨骼衰退方面起到类激素样的保护作用。