Matarelli et al. and D’Anna et al. reported that supplements containing myoinositol can reduce the incidence of GDM in pregnant patients (Matarrelli et al.: RR = 0.127; 95% CI, 0.032–0.502; p = 0.001 and D’Anna et al.: OR = 0.34; 95% CI, 0.17–0.68; p = 0.001) and seem to act as an insulin sensitizer [71,72]. Here, INS is linked to gestational diabetes.