Our data show that in tumors from the adequate iron diet group, as compared to non-tumor tissue, there were significant changes (p ≤ 0.05) in expression of proteins involved in modulation of reactive oxygen species (ROS) (SOD1, SOD2, PRDX1, ITGB1, ALB, and VDAC2; all protein abbreviations and identities are defined and described in Table 2). This evidence concerns the gene SOD1 and neoplasm.