Researchers from Arizona State University examined urine samples from children with and without autism.
They found clear differences in certain chemical compounds produced by gut bacteria.
These compounds, known as metabolites, are linked to the body's production of neurotransmitters, which play an important role in mood, memory, and attention, among other functions.
The researchers also found indications that yeast and fungi in the gut may help explain the differences observed between the children.
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Early support is important
Today, autism is often identified through assessments of a child's behavior. It can take a long time for families to receive a diagnosis.
According to the researchers, earlier identification could make it easier to provide support and intervention at an earlier stage.
At the same time, the findings suggest that gut bacteria may play a greater role in autism than previously believed.
However, the researchers emphasize that further studies are needed before the results can be applied in practice.
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New test shows promising results
The study, published in Molecular Psychiatry, developed a new urine test.
The test is based on 17 selected metabolites and was evaluated in children between the ages of 2 and 11.
According to the researchers, the test identified 90 percent of the children with autism in the study, while no children without autism were incorrectly classified.
Sources: HealthDay and Molecular Psychiatry.
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