In this study, women at high risk of developing glucose intolerance over time (overweight/obese and/or those with a past medical history of GDM) who were breastfeeding at 60 to 180 days postpartum had lower levels of fasting blood glucose, fasting serum insulin, and TG compared to women who were not breastfeeding in the same period. The gene discussed is INS; the disease is gestational diabetes.