Steroids taken for lung development could help a baby grow faster than others?

Maturation: Rather than growth, steroids given during pregnancy help in organ maturation. For the lungs this is about breathing right . In the baby's liver it may help in bilirubin metabolism preventing jaundice (yellow skin) in the baby.

Speed up finish work: The type of steroids given for premi labor are different than those that come out at puberty & help muscles grow. These premi doses speed up the finish work of lung development, allowing babies lung to begin producing a surface active agent that allows the lung sacs not to completely deflate when they exhale. This is like paint on a room wall, a final coating. Without it they can get rds.