Tea drinking is associated with benefits on bone density in older women
Tea drinking is associated with benefits on bone density in older women
复制标题
DOI：
10.1093/ajcn/86.4.1243
复制
发表时间：
2007-10-01
影响因子：
7.1
通讯作者：
Prince, Richard L.
中科院分区：
文献类型：
--
作者：
Devine, Amanda;Hodgson, Jonathan M.;Prince, Richard L.
背景资料：双能X线骨密度仪（DXA）评估的髋部结构受损是骨质疏松性髋部骨折的独立预测因素。一些研究表明，茶的摄入量可能会保护对bone loss.Objective：使用横截面和纵向研究设计，我们研究了茶的消费与髋关节structure.Design的关系：随机选择的妇女（n = 1500）年龄在70-85 y参加了一个5年的前瞻性试验，以评估是否口服钙补充剂预防骨质疏松性骨折。在第1年和第5年用DXA测量髋部aBMD。对1027名5岁女性进行横断面分析，评估了通过问卷调查测量的日常茶摄入量与aBMD的关系。对164名女性进行前瞻性分析，评估基线时茶摄入量与aBMD变化的关系，通过24小时饮食回忆进行测量，从1年到5年。结果：在横断面分析中，饮茶者的全髋aBMD比不饮茶者高2.8%（（x）/bar：806; 95%CI：797，815 mg/cm（2（784; 764、803 mg/cm 2）（P < 0.05）。在4年的前瞻性分析中，饮茶者平均丢失1.6%的髋部aBMD（-32;-45，-19 mg/cm（2）），而不饮茶者丢失4.0%（-13;-20，-5 mg/cm（2））（P < 0.05）。协变量的调整并没有影响results.Conclusion的解释：饮茶与保存老年妇女的髋关节结构。这一发现进一步证明了喝茶对骨骼的有益影响。
Background: Impaired hip structure assessed by dual-energy X-ray absorptiometry (DXA) areal bone mineral density (aBMD) is an independent predictor for osteoporotic hip fracture. Some studies suggest that tea intake may protect against bone loss.Objective: Using both cross-sectional and longitudinal study designs, we examined the relation of tea consumption with hip structure.Design: Randomly selected women (n = 1500) aged 70-85 y participated in a 5-y prospective trial to evaluate whether oral calcium supplements prevent osteoporotic fractures. aBMD at the hip was measured at years I and 5 with DXA. A cross-sectional analysis of 1027 of these women at 5 y assessed the relation of usual tea intake, measured by using a questionnaire, with aBMD. A prospective analysis of 164 women assessed the relation of tea intake at baseline, measured by using a 24-h dietary recall, with change in aBMD from years 1 to 5.Results: In the cross-sectional analysis, total hip aBMD was 2.8% greater in tea drinkers ((x) over bar: 806; 95% CI: 797, 815 mg/cm(2)) than in non-tea drinkers (784; 764, 803 mg/cm(2)) (P < 0.05). In the prospective analysis over 4 y, tea drinkers lost an average of 1.6% of their total hip aBMD (-32; -45, -19 mg/cm(2)), but non-tea drinkers lost 4.0% (-13; -20, -5 mg/cm(2)) (P < 0.05). Adjustment for covariates did not influence the interpretation of results.Conclusion: Tea drinking is associated with preservation of hip structure in elderly women. This finding provides further evidence of the beneficial effects of tea consumption on the skeleton.