We did not find any other results with which to compare our observations; however, Cornelis MC et al. [36], who investigated the other TCF7L2 SNP, reported that the risk of T2DM associated with rs12255372 did not significantly differ by carbohydrate intake, but it may be modified by the carbohydrate quality and quantity, which was not the aim of our study, and further analyses are needed. This evidence concerns the gene TCF7L2 and type 2 diabetes mellitus.