Breastfeeding Basics -Swallows

During breastfeeding, babies use different sucking patterns depending on whether they are actively transferring milk or sucking more lightly for comfort.

Nutritive sucking occurs when the baby is actively drinking and transferring milk from the breast. The sucks are usually deeper, slower, and more rhythmic, with noticeable pauses as the baby swallows. When milk flow is good, you may see a pattern such as suck–swallow, suck–swallow, or several sucks followed by a swallow. The baby’s jaw moves deeply, and the movement may extend toward the ear or temple. Swallowing may be heard as a soft “kah” sound or noticed as a brief pause in the baby’s breathing or jaw movement. Frequent swallowing during nutritive sucking is an important sign that milk is being transferred.

At the beginning of a feeding, the baby may suck more quickly to stimulate the milk ejection or let-down reflex. Once milk begins flowing, the sucking pattern typically becomes slower and deeper, with regular swallows. As the milk flow slows, the baby may need several sucks before each swallow.

Flutter sucking, or non-nutritive sucking, consists of small, light, rapid, or shallow sucking movements. The jaw movement is much smaller than during nutritive sucking, and there are few or no audible or visible swallows because little milk is being transferred. Babies often flutter suck toward the end of a feeding or while relaxing at the breast. This type of sucking can provide comfort and may also help stimulate the breast, but it is different from the deep, rhythmic suck-and-swallow pattern associated with active milk transfer.

When observing a breastfeeding session, the key difference is therefore the presence of deep rhythmic sucking with regular swallowing during nutritive sucking, compared with small, light sucking with minimal or no swallowing during flutter/non-nutritive sucking.

Hearing swallowing is one of the best signs that milk is being transferred effectively.