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7至23个月大的巴西儿童的铁基摄入量值
Alessandra da Silva Pereira1, Inês Rugani Ribeiro de Castro2, Eliseu Verly-Junior3
1Escola de Nutrição, https://ror.org/04tec8z30Universidade Federal do Estado do Rio de Janeiro, Rio de Janeiro, Brasil.
Public health nutrition
|October 28, 2025
概括
为巴西儿童建立了新的铁摄入量参考值 (NRV). 这些适应的NRV,考虑到铁的生物可用性,高于国际建议,确保足够的铁摄入量促进生长和发育.
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:
- 目前的铁摄入量参考值 (NRV) 需要针对特定儿科患者群体进行调整.
- 可以采用协调方法来完善NRV估计.
- 了解当地的食铁生物可用性对于准确的NRV至关重要.
研究的目的:
- 为巴西7-11岁和12-23个月的儿童调整当前的铁摄入量参考值 (NRV).
- 在调整NRV时应用协调原则.
- 估计巴西幼儿对铁的平均需求 (AR) 和人口参考摄入量 (PRI).
主要方法:
- 医学研究所 (IOM) 和欧洲食品安全局 (EFSA) 的应用和调整方法.
- 使用本地和外部数据估计体内的铁损失,生长需求和食铁的生物可用性.
- 利用来自巴西里约热内卢7-23个月龄的儿童概率样本的饮食摄入数据.
主要成果:
- 平均生理铁需求因年龄和性别而异,男性需要更高.
- 在所有组中,平均饮食铁的生物利用率估计为7.5%.
- 巴西儿童的估计NRV (AR和PRI) 为10-19毫克/天 (7-11个月) 和7-13毫克/天 (12-23个月).
结论:
- 巴西适应的铁摄入量NRV高于IOM和EFSA设定的NRV.
- 饮食中铁的生物可用性被确定为影响NRV差异的主要因素.
- 该研究为巴西儿童提供了最新的,特定于背景的铁建议.
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