The primary driver of breast milk production after 10 days postpartum is the removal of milk from the breast tissue, meaning that the more milk is removed, the more the body will produce. A number of complex mechanisms orchestrate this localized ebb and flow of milk, but one key player is a whey protein in breast milk called feedback inhibitor of lactation (FIL). If the milk is not removed, the build-up of FIL in the breast triggers a negative feedback loop, inhibiting additional milk production. Therefore, it’s important to use feeding techniques that favor regular milk removal, such as the following:
- Ensure proper latch.
- Feed frequently and on demand.
- Empty breasts “fully” (i.e., until breasts feel softer and/or hand-expressing more milk is difficult) at each feeding.
- Offer both breasts each time.
- Alternate breasts if the baby is drowsy or is not suckling well. Otherwise, offer the first breast until the baby slows down and stops, then offer the second breast as well.
- Avoid giving bottles of formula or cereal in the first 6 months of life unless advised to do so by your healthcare provider, because the baby will drink less milk.
- Eat and drink enough to support lactation.[1][2]
People with breastfeeding difficulties should work with a lactation consultant to address maternal or infant factors that may be affecting feeding.