Monday, July 13, 2009

Study Links Autism to Autoimmune Diseases in Immediate Family

In a study of children born in Denmark from 1993 to 2004, doctors found that many children with autism or related disorders also had a family history of autoimmune diseases. Autoimmune diseases, such as type 1 diabetes and rheumatoid arthritis, develop when antibodies that normally fight infectious organisms instead attack the body itself. The study was published online this month in Pediatrics.
In the study, doctors examined patterns of disease among children, mothers, fathers and siblings.
For the first time, researchers found an increased risk of autism spectrum disorders in children whose mothers have celiac disease, a digestive condition in which people cannot tolerate gluten, a protein found in wheat, rye and barley.
The study also confirms the results of many earlier papers, says author Hjördis Atladottir of Denmark's University of Aarhus. For example, doctors found an increased risk of autism in children with a family history of type 1 diabetes and an increased risk of autism spectrum disorders in children whose mothers have rheumatoid arthritis.
People with autoimmune diseases shouldn't be alarmed, says author Hjördis Atladottir of Denmark's University of Aarhus. The vast majority of people with these conditions do not have children with autism, he says. In the study, only 3,325 of the more than 689,196 children studied were diagnosed with autism spectrum disorders.

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