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New research led by the University of Washington finds that sleep problems in a baby’s first 12 months may not only precede an autism diagnosis, but also may be associated with altered growth trajectory in a key part of the brain, the hippocampus.

University of Washington researchers are part of a national team that will study the baby teeth of children who have siblings with autism to determine if prenatal exposure to chemicals increases their risk of developing the disorder. The study will involve testing children’s teeth for levels of environmental chemicals that they might have been exposed to in the womb, a critical time for neurodevelopment. Additionally, for a smaller number of children whose genetic data has been collected, the researchers hope…

When the University of Washington Autism Center opened its doors in 2000, the notion that the disorder could be detected in preschool-aged children was controversial. “We were diagnosing kids between 3 and 4 years of age,” recalled Steve Dager, a UW professor of radiology and the center’s former interim director. “People were still skeptical that you could diagnose autism that early.” Much has changed since then. Researchers can now diagnose autism in some children before 12 months. Autism’s prevalence has…