BJCP:过量喝咖啡或可引发骨质疏松症

2021-07-18 MedSci原创 MedSci原创

咖啡是全球最受欢迎的饮料之一,在美国的饮用甚至高于自来水,在我国咖啡甚至成为打工人的每日续命水。咖啡短期内可以提神醒脑及抵抗困倦。

咖啡是全球最受欢迎的饮料之一,在美国的饮用甚至高于自来水,在我国咖啡甚至成为打工人的每日续命水。咖啡短期内可以提神醒脑及抵抗困倦。据数据显示,80%的成年人每天至少饮用一种含咖啡因的饮料。

CCO

大量研究指出,摄入含咖啡因的饮料对健康有潜在益处,比如预防糖尿病,抑郁症或抑郁症状等。然而,关于咖啡因与骨质疏松症关系的研究相对较少且存在争议。近日,南澳大利亚大学的研究人员在British Journal of Clinical Pharmacology杂志上发表了一项新的研究,结果发现过量摄入咖啡因可能会增加患骨质疏松症的风险。

骨质疏松症是一种常见骨代谢障碍性疾病,以骨密度和骨质量下降为主要特征,通常伴发骨小梁结构受损,从而极易导致骨折风险,尤其是女性。随着人类预期寿命的延长,骨质疏松症已成为全球重大公共卫生问题。

在这项双盲研究中,研究人员评估了大剂量、短期咖啡因摄入肾脏对体内钙、钠和肌酐的影响。该研究共纳入24名参与者,参与者在6小时的治疗期内,每隔2小时咀嚼咖啡因(n = 12)或安慰剂(n = 12)口香糖5分钟(总咖啡因800毫克)。

结果发现,在六小时内摄入800 毫克高剂量的咖啡因几乎使肾脏对钙的清除率提高了77%,尿液中的钙质流失量增加了1倍。同时,咖啡因对钠重吸收可能起到了抑制作用。

研究者表示,尽管适量的摄入咖啡因对机体有好处,但了解过量摄入咖啡因对骨质疏松症等疾病的影响非常重要。因为,越来越多的发现,需要在夜间保持警觉的轮班工人,以及在作战环境中使用咖啡因来对抗睡眠不足的军人中,咖啡因摄入量很高。

健康饮食餐盘中文版 https://www.hsph.harvard.edu/nutritionsource/healthy-eating-plate/

目前,对于含咖啡因饮料与骨质疏松症关系研究较少,结论也不一致。有研究显示,高剂量的咖啡因会增加骨折风险,且与骨折部位密度相关,咖啡因的摄入能够增加美国中老年女性髋部骨折的发病风险。然而,有研究显示,咖啡因的摄入可能与特定部位的骨质疏松症降低有关,比如股骨颈和腰椎。研究者认为,这种负相关与咖啡因成分无关,可能与雌激素效应,抗氧化效应和抗炎效应等机制相关。

综上,有关咖啡因与骨骼健康之间的因果关系,仍需更多研究加以证明。当然,在饮品的选择上,健康饮食餐盘建议把水作为首选,其次,其次可以选择茶或者咖啡等饮品。在喝咖啡的时候不要贪杯哦,适量即可。

原始出处

Stephanie E. Reuter et al, The effect of high‐dose, short‐term caffeine intake on the renal clearance of calcium, sodium and creatinine in healthy adults, British Journal of Clinical Pharmacology (2021). DOI: 10.1111/bcp.14856

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    2021-07-20 Eleven17
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    2021-07-18 ms8000001153798613

    好文

    0

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    2021-07-18 土豆你个马铃薯

    咖啡我8恶意

    0

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    2021-07-18 kontar

    到底多少叫过量

    0

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