FADS1 and type 2 diabetes mellitus: We selected a single SNP within the FADS1/FADS2 region, despite other SNPs being associated with PUFA concentrations [17]; however, rs174547 is in perfect linkage disequilibrium with rs174546 (R2 = 1.0, D’ = 1.0), which shows a significant interaction with PUFA intake on CVD [23], and rs174547 was previously investigated in a large pooled analysis of cohort studies on LA biomarkers and type 2 diabetes risk [15].