No significant iron metabolism SNP – dietary heme iron intake interaction was detected with the 1-df test (Model 3) in relation to T2D (top SNP rs1805313; in ALAD (delta-aminolevulinate dehydratase); pooled p = 1.14 × 10-3; Bonferroni corrected significance level p = 2.10 × 10-4). This evidence concerns the gene ALAD and type 2 diabetes mellitus.