Regarding HOMA-IR, our results are consistent with previous studies in women with GDM.7 25 Other studies in this population have not shown an association between breastfeeding and insulin secretion such as HOMA-B,20 25 although correlation was close to significance in one of them.25 Unadjusted results in our cohort also showed an association between breastfeeding and the insulin resistance-adjusted secretion, the ISSI-2, consistent with two previous studies. Here, INS is linked to gestational diabetes.