A new study challenges the common belief that cerebral palsy is caused by brain injuries to newborns during delivery. Instead, researchers found most neurological damage comes from problems much earlier in pregnancy. NPR's Jon Hamilton reports.
NPR transcripts are created on a rush deadline by an NPR contractor. This text may not be in its final form and may be updated or revised in the future. Accuracy and availability may vary. The authoritative record of NPR’s programming is the audio record.