California Autism Clusters Tied to Parents' Education, Not Environment

Researchers have found clusters of autism in 10 areas around California -- but with no suggestion of a link to local pollution or other environmental exposures, they said. Instead, the only consistent factor among the areas -- identified largely in Southern California and the San Francisco Bay region -- was a population of well-educated parents, Karla Van Meter of the University of California Davis and colleagues found. In six of the clusters, a college-educated parent conferred a risk of...Full Story
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