JAMA:老年女性补充维生素D并不能降低患癌风险

2017-04-01 生物谷 生物谷

根据一项最新发表在JAMA上的研究,对于绝经后女性,与服用安慰剂相比,补充维生素D3和钙并不会降低4年后的患癌风险。 在美国,约有40%的人在生命中某个时间点会被诊断出患有癌症,研究表明低剂量维生素D可能会升高患癌的风险,因此研究人员也在研究维生素D是否具有降低患癌风险的功能。来自克雷顿大学护理和药学系Joan Lappe博士及其同事将2

根据一项最新发表在JAMA上的研究,对于绝经后女性,与服用安慰剂相比,补充维生素D3和钙并不会降低4年后的患癌风险。

在美国,约有40%的人在生命中某个时间点会被诊断出患有癌症,研究表明低剂量维生素D可能会升高患癌的风险,因此研究人员也在研究维生素D是否具有降低患癌风险的功能。来自克雷顿大学护理和药学系Joan Lappe博士及其同事将2303名55岁以上女性(平均年龄65岁)随机分为治疗组(n=1156,2000IU/d维生素D3和150 mg/d钙)和安慰剂组(n=1147),研究时间为4年。研究人员检测了试验者患各种癌症的比例(包括非黑素瘤皮肤癌)。

总共发现新发癌症病例109例,其中治疗组(维生素D3+钙)45例(3.89%)、安慰剂组64例(5.58%)。治疗组和安慰剂组4年发病率分别为0.042和0.060,两组病人乳腺癌发病率无显著性差异。

与治疗相关的严重副作用包括肾结石(治疗组16人,安慰剂组10人)和血钙水平升高(治疗组6人,安慰剂组2人)。

作者对于两组病人所有癌症发病率均无显著性差异的解释之一是两组病人的基线维生素D的水平高于美国人口的平均水平。

“还需要进一步研究指出维生素D在预防癌症过程中可能发挥的作用。”

原文出处:

Joan Lappe, Patrice Watson, Dianne Travers-Gustafson et al. Effect of Vitamin D and Calcium Supplementation on Cancer Incidence in Older Women. JAMA, 2017; 317 (12): 1234 DOI: 10.1001/jama.2017.2115

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    2017-11-18 sjq027
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    2017-04-02 lq0307
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