维生素D补充剂在随机对照D-Health试验中对甲状腺功能低下的影响
Mary Waterhouse1, Hai Pham1,2, Sabbir T Rahman1
1Population Health Program, QIMR Berghofer Medical Research Institute, Brisbane, Australia.
Thyroid : official journal of the American Thyroid Association
|September 12, 2023
概括
补充维生素D并没有显著降低老年人甲状腺功能低下的发病率. 然而,在女性中观察到潜在的益处,这表明对这一群体进行进一步的研究是有必要的.
科学领域:
- 内分泌学 在内分泌学.
- 营养科学 营养科学
- 临床试验 临床试验
背景情况:
- 自身免疫性甲状腺疾病是充足地区甲状腺功能低下的主要原因.
- 观察性研究表明,维生素D水平与自身免疫性疾病之间存在反向联系.
- 针对自身免疫性甲状腺疾病的维生素D随机对照试验 (RCT) 的证据有限.
研究的目的:
- 评估维生素D补充剂对甲状腺功能低下的发生率的影响.
- 评估维生素D补充是否会影响自身免疫性甲状腺疾病的发展.
主要方法:
- 对D-Health试验数据的分析,这是一项大型随机双盲安慰剂对照研究.
- 包括17,851名60岁及以上的澳大利亚成年人,每月补充维生素D3或安慰剂.
- 基于levothyroxine处方的甲状腺功能低下症诊断,并使用生存模型进行随访.
主要成果:
- 补充维生素D并没有显著降低甲状腺功能低下的总体发病率 (HR 0.89,95% CI 0.71-1.12).
- 在女性 (HR 0.78,95% CI 0.58-1.06),但在男性 (HR 1.06,95% CI 0.74-1.50) 中没有出现降低甲状腺功能障碍的趋势.
- 随访时间中位数为4.1年,其中293名参与者患有甲状腺功能低下症.
结论:
- 维生素D补充剂没有显示出对甲状腺功能低下的显著整体保护作用.
- 对女性的潜在有益影响需要进一步研究.
- 该研究强调了对自身免疫性疾病的维生素D补充试验中需要进行性别特定分析的必要性.
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