Autism and phthalate metabolite glucuronidation.
Kids with autism may clear some plasticizers more slowly, a lab finding that does not change your ABA plan.
01Research in Context
What this study did
Stein et al. (2013) compared urine from kids with autism to kids without it.
They checked how well each group could attach a sugar tag to plasticizer chemicals.
Less tagging means the body keeps the chemical longer.
What they found
Children with autism had weaker sugar-tagging of one plasticizer.
Their bodies were slower at getting rid of the chemical.
This points to a small but real metabolic difference.
How this fits with other research
Lussu et al. (2017) later saw the same urine pattern in Italian siblings with autism.
Gulati et al. (2026) found high homocysteine in blood, not urine, yet both teams see a stress signal.
James et al. (2008) first saw methylation trouble in parents, so the glitch may run in families.
Why it matters
You cannot fix sugar-tagging with ABA, but you can note it in your intake. If parents ask about toxins, you can say some kids with autism clear certain chemicals more slowly. Keep teaching skills and tracking behavior; the metabolic clue just helps the medical team rule out other issues.
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02At a glance
03Original abstract
Exposure to environmental chemicals may precipitate autism spectrum disorders (ASD) in genetically susceptible children. Differences in the efficiency of the glucuronidation process may substantially modulate substrate concentrations and effects. To determine whether the efficiency of this pathway is compromised in children with ASD, we measured the efficiency of glucuronidation for a series of metabolites derived from the commonly used plasticizer, diethylhexyl phthalate. Spot urines were collected and analyzed for the fraction of each metabolite conjugated by isotope dilution-liquid chromatography mass spectrometry-mass spectrometry. The degree of glucuronidation was lower with the ASD group. The glucuronidation pathway may differ in some children with ASD.
Journal of autism and developmental disorders, 2013 · doi:10.1007/s10803-013-1822-y