长期的β-胡卜素补充和2型糖尿病的风险:一个随机对照试验
1Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02215, USA. simin.liu@channing.harvard.edu
JAMA
|September 24, 1999
概括
在12年内,β-胡卜素补充剂并没有降低健康男性患2型糖尿病 (DM) 的风险. 这项随机试验发现,贝塔胡卜素和安慰剂组之间的DM发病率没有显著差异.
科学领域:
- 营养科学 营养科学
- 预防医学 预防医学
- 临床试验 临床试验
背景情况:
- 新出现的数据表明,胡卜素可能通过抗氧化机制对2型糖尿病 (DM) 进行保护.
- 然而,随机试验中缺乏关于β-胡卜素在预防DM中的有效性的直接证据.
研究的目的:
- 调查长期补充β-胡卜素是否可以降低2型糖尿病 (DM) 的发生率.
主要方法:
- 这是一项随机,双盲,安慰剂控制的试验,从1982年到1995年,涉及22 071名健康的美国男性医生 (年龄在40-84岁).
- 参与者在交替的日子里接受50毫克的β-胡卜素或安慰剂.
- 衡量的主要结果是2型糖尿病 (DM) 在12年的中位随访期间的发病率.
主要成果:
- 在β-胡卜素组 (396例) 和安慰剂组 (402例) 之间没有观察到2型糖尿病发病率的显著差异.
- 使用β-胡卜素的2型糖尿病的相对风险为0.98 (95% CI,0.85-1.12),在多变量调整后没有变化.
- 根据随访年或治疗持续时间进行的子组分析也没有显示任何益处的证据.
结论:
- 平均12年补充β-胡卜素并没有影响这一群健康男性患2型糖尿病 (DM) 的风险.
- 这些发现不支持使用β-胡卜素预防2型糖尿病 (DM).
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