In GDM Intervention Group, pre gestational BMI was positively correlated with MDA (r = 0.195, p < 0.01), while other hormone related indicators were not significantly correlated with MDA (p > 0.05); HbA1c was positively correlated with SOD (r = 0.158, p < 0.05), while E and HOMA-IR were negatively correlated with SOD (r = −0.306, −0.213, both p < 0.01; Table 6). This evidence concerns the gene SOD1 and gestational diabetes.