Linda, I am a dietitian, and I too have heard that it takes 20 minutes for the stomach to let the brain know that it is full. First I have never been able to find any data to document this "fact", and secondly, many things which apply to adults do not apply to infants, so I would hesitate to repeat this. If the flow on the nipple is adjusted so that the baby is not having to gulp large amounts, most bottle fed babies know when they are full and actually stop sucking, and refuse the nipple. Some mothers will insist they finish and will keep urging them onward. Bottlefed usually sleep longer due to the slower digestibility of the ABM, and consistent bolus of feedings. Calories do not vary as does Brmilk which varies appropriately due to foremilk,hindmilk variation. Just some thoughts, and a desire to stick to research based info. Michelle Scott, RD,MA,IBCLC ---------- From: Linda Barrett Ibclc[SMTP:[log in to unmask]] Sent: Tuesday, November 11, 1997 4:25 AM Subject: Breastmilk vs ABM I have be operating under the impression that the breastfed baby takes in less BM from the breast than from a bottle because it takes a lot longer to nurse than guzzle a bottle. It takes approximately 20 minutes for the stomach to signal the brain that it is full. The typical bottle fed baby will drink a bottle in under 10 minutes. Even if given more than an appropriate amount, this baby will cry for more -- We call it the Thanksgiving Day Dinner. Baby gorges himself because he thinks he is hungry and its too late once the signal reaches the brain. Baby's stomach is stretched beyond belief and if baby has not thrown it up, he sleeps for hours (right through those football games!) Linda Barrett, IBCLC