Lactation improves glucose metabolism, but its role in preventing
type 2 diabetes mellitus (DM) after gestational diabetes mellitus (GDM) remains uncertain. This study, published in Annals of
, found that among women who had gestational diabetes, higher lactation intensity and longer duration
lactation was associated with a lower rate of type 2 diabetes for up to 2 years after childbirth. The results could not be explained by
differences in age, pre-pregnancy body size, or other risk factors. Lactation for longer than 2 months lowered the risk of type 2 diabetes
by almost half. Lactation beyond 5 months lowered the risk by more than half.