MyHealthNewsDaily | Steroids given to preemies may harm their brains msnbc.com Researchers found that premature babies treated with the steroid drugs hydrocortisone or dexamethasone had cerebellums that were 10 percent smaller than those of normal newborns. The cerebellum is a region of the brain that plays an important role in ... Steroids May Be Bad for Preemies' Brains Steroids Given to Preemies May Harm Brain Growth: Study |