A 32-year-old woman is diagnosed with gestational diabetes (GDM) by DIPSI criteria (non-fasting 2-hour plasma glucose ≥140 mg/dL). Which of the following long-term risks has been demonstrated for her offspring, independent of maternal obesity?
- A Increased risk of type 1 diabetes mellitus in childhood through autoimmune beta-cell sensitization
- B Increased risk of obesity and type 2 diabetes mellitus in childhood and adolescence via fetal metabolic programming ✓
- C Elevated risk of congenital heart disease due to maternal hyperglycemia during organogenesis
- D Reduced cognitive function through hyperglycemia-mediated fetal brain glucose toxicity in utero
Explanation
Offspring of mothers with gestational diabetes have significantly increased lifetime risk of obesity, metabolic syndrome, and type 2 diabetes mellitus — a phenomenon explained by the Barker hypothesis of 'fetal metabolic programming' (in-utero hyperglycemic milieu programs adipogenesis and insulin resistance pathways). Multiple longitudinal cohort studies (HAPO Study offspring follow-up, Pima Indian cohort) demonstrate this risk independent of maternal pre-pregnancy BMI. Type 1 diabetes (A) is autoimmune and not increased by maternal GDM. Congenital heart disease (C) is associated with pre-gestational diabetes during organogenesis (first trimester), not GDM which is diagnosed in the second/third trimester. Cognitive impairment (D) has some weaker associations but is not the established primary risk.
Reference: Williams Obstetrics, 26th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
Written and medically reviewed by the StethoPrep medical team.