素食者对非血红素铁吸收的饮食适应:一项受控试验
Miguel López-Moreno1,2, Isabel Viña3, Paula Marrero-Fernández1
1Diet, Planetary Health and Performance, Faculty of Health Sciences, Universidad Francisco de Vitoria, Pozuelo de Alarcón, Spain.
Molecular nutrition & food research
|May 5, 2025
概括
素食主义者比食肉动物更有效地吸收非血红素铁,正如食用 pistachios 后血清铁水平更高所显示的那样. 这表明以植物为基础的饮食可以通过生理适应来增强铁的吸收.
科学领域:
- 营养科学 营养科学
- 人体生理学 人体生理学
- 饮食中的新陈代谢
背景情况:
- 来自植物来源的非血红铁的生物可用性通常低于来自动物来源的血红铁.
- 这种较低的生物可用性可能会在素食者群体中构成缺铁的风险.
- 了解素食者的铁吸收机制对于公共卫生至关重要.
研究的目的:
- 为了比较非血红素铁摄入后血铁水平的急性变化,在素食者和食肉动物中比较.
- 研究铁的吸收差异背后的生理机制.
- 评估植物性饮食对铁代谢的影响.
主要方法:
- 这项比较研究涉及27名年龄在18-30岁之间的参与者 (素食者和杂食者).
- 测量基线身体组成,血压和生物标志物.
- 血清铁水平在基线和120分钟,150分钟内摄入150g pistachios后的分析.
主要成果:
- 素食主义者表现出血清铁曲线下的面积 (AUC) 与食肉动物相比显著更高 (1002.8比853μmol/L/h).
- 多变量回归显示了素食者更高的铁吸收和较低的肝素水平和基础铁状况之间的关联.
- 这些发现表明,在遵循素食饮食的人群中,非血红素铁的吸收增强.
结论:
- 素食饮食与优越的非血红素铁吸收有关,与食肉饮食相比.
- 铁代谢中的生理适应似乎促进了素食主义者更大的铁吸收.
- 需要进一步的纵向研究来证实这些发现并评估长期影响.
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