Metabolic and Inflammatory Profiles in Children and Adolescents with Autism Spectrum Disorder: A Cross-Sectional Study

Autism spectrum disorder (ASD) is associated with several coexisting diseases or comorbidities, including inflammatory and metabolic disorders. In fact, ASD symptoms may be associated with immune system dysfunction. However, studies investigating the peripheral blood levels of immune cells are lacking and have provided mixed findings. In this study, we evaluated the relationship between the intensity level of ASD symptoms and the inflammatory and metabolic profiles in 154 children and adolescents (2-17 years). Bayesian multilevel models were used to examine the relationship between their symptom intensities and inflammatory/metabolic profiles. Heavier children had higher values for triglyceride and insulin levels. Children with a level 3 of ASD intensity had higher free fatty acids levels. However, when adjusting for ASD intensity, gender, medication use, or weight status, older children appeared to have higher values of triglycerides, insulin levels, and free fatty acids. We concluded that as Brazilian children with ASD became older, they had a higher risk for insulin resistance.