Protective factors for anemia were female [OR = 0.199, p = 0], higher AUC0–24h [OR = 0.989, p = 0], higher level of ALB [OR = 0.803, p = 0], genotype AA + AG of rs1045642 [OR = 0.739, p = 0.008], genotype GG + GT of rs1801131 [OR = 0.763, p = 0.013], and genotype AA of rs2236225 [OR = 0.568, p = 0.005]. This evidence concerns the gene ALB and anemia (phenotype).