Iron deficiency is a common disorder in general population and independently predicts all-cause mortality: results from the Gutenberg Health Study.

Schrage B, Rübsamen N, Schulz A, Münzel T, Pfeiffer N, Wild PS, Beutel M, Schmidtmann I, Lott R, Blankenberg S, Zeller T, Lackner KJ, Karakas M.

Clin Res Cardiol. 2020 Nov;109(11):1352-1357. doi: 10.1007/s00392-020-01631-y.  PMID: 3215702.

https://pubmed.ncbi.nlm.nih.gov/3215702