Infant MRIs show autism linked to increased cerebrospinal fluid

A national research network found that many toddlers diagnosed with autism at two years of age had a substantially greater amount of extra-axial cerebrospinal fluid (CSF) at six and 12 months of age, before diagnosis is possible. They also found that the more CSF at six months -- as measured through MRIs -- the more severe the autism symptoms were at two years of age.

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