In the Mexican population, some associations of FTO SNPs with obesity of the SNPs rs1121980, rs17817449, rs3751812, and rs9930506 have been observed in the mestizo population [7], and rs9939609 and rs1421085 were associated with obesity in the Mayan population [15]. The gene discussed is FTO; the disease is obesity due to melanocortin 4 receptor deficiency.