Psychological wellbeing was assessed in women with GDM treated with diet (GDM-Diet, n = 20) or insulin (GDM-Insulin, n = 15) and pregnant women without GDM (non-GDM, n = 20) using questionnaires [Edinburgh Depression Scale (EDS), State-Trait Anxiety Inventory (STAI-6), and in women with GDM, Problem Areas in Diabetes (PAID)] at 24–34 weeks gestation and again at ∼36 weeks gestation. The gene discussed is INS; the disease is gestational diabetes.