What is preterm birth?

2. A preterm baby's body and brain

A preterm baby is born before all of the organ systems are fully developed. Being born before 32 weeks of gestation usually means that medical support is needed to survive - these babies are cared for in a specialist neonatal unit. With good care the majority of babies born 24 weeks of gestation or above will survive.

View the video of neonatologist Professor Neil Marlow to hear more about how a preterm baby's body and brain develops.