SFA interacted with rs12143966, wherein each 1% increase in SFA intake increased insulin by 0.0063 IU mL<sup>-1</sup> (SE ± 0.002, p = 0.001) per each major (G) allele copy. rs4925663, interacted with SFA (β ± SE = -0.0058 ± 0.002, p = 0.004) to increase insulin by 0.0058 IU mL<sup>-1</sup> , per additional copy of the major (C) allele.