The New "Breastfeeding Answer Book" on p280-83 discusses transient lactose intolerance (also called "nuisance diarreah" in toddlers) but this is not the terminology used for normal, runny breastfed newborn stools. I would suggest that the doctor who gives this diagnosis is confusing true lactose intolerance and even "transient" lactose intolerance in toddlers with *oversupply syndrome* or *foremilk-hindmilk inbalance* in the newborn: "Oversupply syndrome (Woolridge 1988) ... sometimes happens when a baby receives too much of the watery lactose-rich foremilk and not enough of the fatty, high-calorie hindmilk. Too much lactose is though to stimulate the baby's digetive tract, which then moves the mlk along too fast, causing the watery, green stools." Lact-Aid drops and restrictive diets tell the mother that something is wrong with her milk when what probably needs to be done is a different kind of feeding management - namely, finishing the first breast first before offering the second OR restricting the baby to one breast per feeding, switching to the other after a 2-4 hour period. Woolridge, M. and Fisher, C. Colic, "overfeeding" and symptoms of lactose malabsorption in the breastfed baby: a possible artifact of feed management? *Lancet 1988; II(8605): 382-4. Lisa Jones, LLLL, in Wellington FL [log in to unmask]