Benefit-risk assessment of vitamin D supplementation.

Benefit-risk assessment of vitamin D supplementation.
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DOI:
10.1007/s00198-009-1119-3
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发表时间:
2010-07
影响因子:
4
通讯作者:
Willett, W. C.
Willett, W. C.
中科院分区:
医学2区
文献类型:
--
作者:
Bischoff-Ferrari, H. A.;Shao, A.;Dawson-Hughes, B.;Hathcock, J.;Giovannucci, E.;Willett, W. C.

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目前200至600 IU维生素D/d的建议摄入量可能不足以减少维生素D减少的重要疾病结局。评估更高剂量和更高的25-羟基维生素D水平(25(OH)D)与任何相关风险的获益。基于双盲RCT,8项针对福尔斯(n=2426),12项针对非椎骨骨折(n= 42,279),在较高剂量和较高的25(OH)D水平与较高的跌倒和骨折预防之间存在显著的剂量-反应关系。在迄今为止测试的最高剂量700至1000 IU维生素D/d或平均25(OH)D在75至110 nmol/l(30-44 ng/ml)之间时观察到最佳益处。关于心血管健康和结肠直肠癌预防的前瞻性队列数据表明,评估的最高类别25(OH)D(中位水平在75和110 nmol/l之间)的获益增加。在25项随机对照试验中,平均血清钙水平与口服维生素D(高达100,000 IU /d)或达到25(OH)D(高达643 nmol/l)无关。在大多数RCT中,维生素D 1800 IU至4000 IU/d的平均水平达到75至110 nmol/l,无风险。我们的分析表明,平均血清25(OH)D水平约为75至110 nmol/l,可为所有研究终点提供最佳益处,而不会增加健康风险。这些水平可以通过口服剂量在1800至4000 IU维生素D/d的范围内获得;需要进一步的工作,包括受试者和环境因素,以更好地确定将在大多数人群中达到最佳血液水平的剂量。
The current intake recommendations of 200 to 600 IU vitamin D/d may be insufficient for important disease outcomes reduced by vitamin D. To assess the benefit of higher dose and higher achieved 25-hydroxyvitamin D levels (25(OH)D) versus any associated risk. Based on double-blind RCTs, 8 for falls (n=2426) and 12 for non-vertebral fractures (n=42,279), there was a significant dose-response relationship between higher dose and higher achieved 25(OH)D and greater fall and fracture prevention. Optimal benefits were observed at the highest dose tested to date for, 700 to 1000 IU vitamin D/d, or mean 25(OH)D between 75 to 110 nmol/l (30–44 ng/ml). Prospective cohort data on cardiovascular health and colo-rectal cancer prevention suggested increased benefits with the highest categories of 25(OH)D evaluated (median levels between 75 and 110 nmol/l). In 25 RCTs, mean serum calcium levels were not related to oral vitamin D up to 100,000 IU /d or achieved 25(OH)D up to 643 nmol/l. Mean levels of 75 to 110 nmol/l were reached in most RCTs with 1800 IU to 4000 IU vitamin D/d without risk. Our analysis suggests that mean serum 25(OH)D levels of about 75 to 110 nmol/l provide optimal benefits for all investigated endpoints without increasing health risks. These levels can be best obtained with oral doses in the range of 1800 to 4000 IU vitamin D/d; further work is needed, including subject and environment factors, to better define the doses that will achieve optimal blood levels in the large majority of the population.
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