Objective: A relation between transfusional IOL (iron overload), HFE status and oxidative damage was evaluated. Design, setting and participants: An observational cross-sectional study involving 87 healthy individuals and 78 patients with myelodysplastic syndromes (MDS) with and without IOL, seen at University Hospital of the Federal University of Ceará, Brazil, between May 2010 and September 2011. Methods: IOL...