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#hepcidin

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nutrition

Moins de fer, tous les deux jours : mêmes gains de ferritine chez les femmes

BY DR. GYMBRO ·

L’hépcidine limite l’absorption du fer après chaque prise, ce qui explique souvent la mauvaise tolérance du fer oral. Un essai randomisé de 2026 portant sur 66 femmes carencées a comparé 21 mg de fer tous les 48 h à 30 mg par jour pendant 42 jours. La ferritine a augmenté de façon significative dans les deux groupes, sans différence notable, tandis que l’hémoglobine est restée stable et les effets gastro‑intestinaux étaient légers. L’étude était active‑contrôlée (pas de placebo) et les deux formes de fer étaient différentes, ce qui rend la comparaison prudente. Voici ce que cela signifie pour les sportives et pourquoi il faut mesurer la ferritine avant de se supplémenter.

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