Human milk after NICU discharge linked to fewer respiratory complications in children with BPD

A study of 1,731 children with bronchopulmonary dysplasia found that those given human milk after leaving intensive care were less likely to need sick visits, emergency treatment or respiratory medicines.

For parents of babies born very preterm, the months after leaving intensive care can be a precarious stretch, when fragile lungs are still developing and small setbacks can quickly become serious. New research published in Pediatric Research suggests that human milk during that period may offer measurable protection for children with bronchopulmonary dysplasia, the chronic lung condition that affects many of the smallest survivors of prematurity.

In the multicentre study, researchers followed 1,731 children under the age of two who were seen in specialist BPD clinics. They found that 445 children, or about one in four, received human milk after discharge from the neonatal intensive care unit. Those children were less likely than peers fed only formula to need sick visits or emergency care, and they were also less likely to be prescribed antibiotics, steroids or beta-agonist medicines, which are commonly used to relieve wheezing and other obstructive breathing symptoms.

After adjusting for other factors, the differences remained notable. Children who had human milk after leaving hospital had lower odds of sick visits, emergency department visits, antibiotic use, steroid use and beta-agonist use in the preceding three months. The findings add to earlier work showing that human milk exposure in the NICU itself can reduce the risk of BPD, and they extend that evidence into the home setting, where feeding routines are often far harder to sustain.

The results do not prove that human milk caused the better outcomes. The study was retrospective and relied in part on caregiver reports, so unmeasured factors such as family circumstances, maternal health and access to follow-up care may also have played a role. Even so, the pattern was consistent across several measures of respiratory illness and health service use, which strengthens the case that feeding choices after discharge may matter.

That point is important because sustaining human milk feeding after the NICU is difficult for many families. Earlier research has shown that mothers of infants with BPD are more likely to stop earlier when babies have greater medical complexity or when social and economic pressures make pumping and storage harder to maintain. The new study also fits with prior research suggesting a dose-related protective effect from human milk in very preterm infants, reinforcing the idea that even after discharge, nutrition remains part of respiratory care rather than a separate issue.

For clinicians, the findings support more deliberate counselling at discharge and closer lactation support once families are home. The researchers say further studies should examine how much human milk is needed, whether donor milk offers similar benefits, and how to better support families trying to continue feeding human milk after a difficult NICU stay.