Causes of low breast milk supply

Breast fullness, pumping output and a baby's wish to feed frequently do not measure supply reliably on their own. Feeding observation and the baby's weight, swallowing and urine and stool pattern give more useful information.

Milk production responds to regular, effective removal. A shallow attachment, restricted tongue movement, sleepiness, pain, scheduled feeds or long gaps can leave milk behind and signal the breasts to make less. Supplementing without expressing can have a similar effect.

Delayed milk production may also follow heavy bleeding around birth, retained placental tissue or significant illness. Thyroid disorders, polycystic ovary syndrome, previous breast surgery and some medicines can contribute. Sometimes production is adequate but the baby has difficulty transferring milk.

Seek an observed feed from a midwife or lactation professional so attachment, swallowing and comfort can be checked together. Offer the breast responsively, use skin-to-skin contact and allow active feeding before switching sides. If milk is not being removed well, hand expression or a suitable pump may help protect production while the cause is addressed.

Do not stop prescribed medicine or start herbs or milk-boosting products without clinical advice. The plan should protect the baby's intake while supporting your feeding goals and treating pain, infection or an underlying condition.

Contact a healthcare professional promptly if the baby is difficult to wake for feeds, feeds weakly, has fewer wet nappies than expected, has a dry mouth, appears increasingly yellow or is not gaining weight as advised. Urgent assessment is also needed if you feel acutely unwell, have a hot painful breast with fever, or had heavy bleeding and now feel faint or breathless.

Ask whether milk transfer has been observed, how the baby's growth and hydration will be monitored, whether expressing is needed, and whether your birth history, medicines or thyroid health should be reviewed.