人类铁的推荐膳食摄入量（RDI）。

Am J Clin Nutr. 1987 Apr;45(4):679-86. doi: 10.1093/ajcn/45.4.679.

Evidence is presented that requirements for dietary iron must take into account increasing percentage absorbability of iron from plant foods as quantity of iron in such foods decreases and, also, toxicity of iron. Recommendations appropriate to this evidence are presented.

有证据表明，膳食铁的需求必须考虑到随着植物性食物中铁含量的减少，铁的吸收率会相应增加，同时还要考虑铁的毒性。本文给出了基于这一证据的合理建议。