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澳大利亚学龄前儿童在特定的饮食时间摄入铁的生物可用性很低
Linda A Atkins1, Sarah A McNaughton1, Alison C Spence1
1Institute for Physical Activity and Nutrition (IPAN), School of Exercise and Nutrition Sciences, Deakin University, Melbourne Burwood Campus, 221 Burwood Highway, Burwood, VIC, 3125, Australia.
European journal of nutrition
|June 14, 2024
概括
澳大利亚学龄前儿童的铁生物可用性较低,许多儿童无法满足他们的营养需求. 干预措施应侧重于改善铁的吸收,特别是在早餐.
科学领域:
- 营养科学 营养科学
- 儿童营养学 儿童营养学
- 公共卫生 公共卫生
背景情况:
- 在资源丰富的国家,缺铁是一个问题,可能与铁的生物可用性差有关.
- 澳大利亚学龄前儿童的铁摄入量生物可用性尚未得到充分了解.
- 饮食因素显著影响铁的吸收和状态.
研究的目的:
- 为了估计澳大利亚学龄前儿童饮食中的铁的生物可用性.
- 为了分析铁的生物可用性,在一天中的不同饮食场合.
- 确定吸收铁摄入量不足的儿童的比例.
主要方法:
- 利用了来自2011-12年国家营养和体力活动调查的812名2至6岁以下儿童的饮食数据.
- 采用了两个24小时的饮食回忆和多种来源方法来估计通常的摄入量.
- 应用了五种已确定的算法来评估铁的生物可用性,并计算吸收铁摄入量不足的患病率.
主要成果:
- 每日铁的生物利用率在2.7%至10.5%之间,产生0.18-0.75毫克/天的可吸收铁.
- 儿童摄入不足可吸收铁的患病率惊人高,在32%至98%之间.
- 晚餐时铁的生物利用率最高 (4.2-16.4%),早餐时最低 (1.2-5.6%).
结论:
- 需要采取战略来提高澳大利亚学龄前儿童的生物可用铁摄入量,以减轻缺乏症风险.
- 建议与富含铁的食物一起促进消费铁吸收增强剂.
- 用铁吸收增强剂准早餐可能是一个关键的干预策略.
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