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Autism Cases on the Rise; Reason for Increase a Mystery

Scientists are scouring genetic and evironmental data to find a cause for the rise in autism.

Tracking the Genetic-Environmental Interplay continued...

Even if some environmental exposures or other findings do stand out, he says, "we are going to have to resist the temptation to say, 'This is it,'" Newschaffer says.

Natowitz of Cleveland Clinic agrees. "There won't be one single explanation."

(From CNN: What is autism? Watch CNN's autism slide show.) 

Reviewed on March 28, 2008
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