Funding Information: This research was funded by CIBER (Consorcio Centro de Investigaci\u00F3n Biom\u00E9dica en Red) (CB07/08/0028) and the Department of Research and Universities of the Generalitat of Catalonia (SGR-00815). Publisher Copyright: © 2025 by the authors.; Heart failure (HF), particularly of an ischemic etiology, is steadily increasing worldwide. Non-anemic iron deficiency (ID) is highly prevalent...