GIP and type 2 diabetes mellitus: Furthermore, in the VAT of the Ob + Pre-T2D group, GIP (10 nM) decreased VAT alanine production (Ob + Pre-T2D: GIP (0 nM), 0.97 ± 0.40 nmol/mg of VAT vs. GIP (10 nM), 0.66 ± 0.31 nmol/mg of VAT, Δ −31.95%, p < 0.05).