One of the challenges of looking for the causes of autism is that some findings are misleading. Just because something is related to autism doesn't it mean it caused it. Such is the dilemma in the findings of a recent study looking at autism risk and babies born early.
Researchers found that the earlier babies were born before they were full term, the more likely it was that they were later diagnosed with autism.
However, it is not clear that being born early caused the developmental disorder.