A number of food frequency ranks showed both temporal trends and associations with GDM, but of note is the frequency of egg consumption (negative temporal trend p = 0.03, slope = −6.2 ranks/year; negative association with GDM p = 3.0 × 10−8, slope = −0.002 increased risk/rank) as it was also positively associated with the insulin disposition index (p = 1.17 × 10−3, slope = 0.42 ranks. This evidence concerns the gene INS and gestational diabetes.