I had a mom several years ago with severe leaking that started a few months postpartum after finally getting through a very trying initiation phase: sore nipples, mastitis, thrush, overactive MER, sucking difficulties. This mom would spontaneously let down and leak several times a day to the extent that milk would spray across the room if she were not wearing clothing. The only significant change during this time period was that this mom had begun binging and purging (vomiting). A colleague knowledgeable about bulemia found it to be associated with forceful milk ejection. Moms are not always candid about this type of problem, but you could ask her if she is vomiting a lot. I have not heard of leaking with a new pregnancy, often milk supply declines slowly by mid-pregnancy. Thyroid disorders seem to be common in postpartum women, hyperthyroidism could cause a huge increase in milk supply. You could refer the mom to her MD for blood tests for prolactin, T3, T4 and TSH levels. Is it possible that the baby is taking less milk suddenly due to development (walking and being too busy to nurse?) or an increase in solid intake? If this is the case, the leaking should stop pretty quickly as mom adjusts to the lower demand. Could the mother possibly be eating a lot of licorice or taking a drug or herb that affects smooth muscle tone? This could conceivably relax the circular muscles that keep milk in the breasts... Keep me posted, Cathy