A study in PLOS One found that milk-producing glands become highly sensitive to insulin during lactation and that insulin receptors were switched on during lactation, suggesting that the hormone plays a key role in breast-milk production. "Considering that 20% of women between 20 and 44 are prediabetic, it's conceivable that up to 20% of new mothers in the U.S. are at risk for low milk supply due to insulin dysregulation," said study author Laurie Nommsen-Rivers.

Related Summaries