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  • Title: Vitamin A and vitamin D deficiencies exacerbate symptoms in children with autism spectrum disorders.
    Author: Guo M, Zhu J, Yang T, Lai X, Lei Y, Chen J, Li T.
    Journal: Nutr Neurosci; 2019 Sep; 22(9):637-647. PubMed ID: 29338670.
    Abstract:
    Objectives: This study was designed to investigate the vitamin A (VA) and vitamin D (VD) levels in children with autism spectrum disorders (ASD) and to determine whether co-deficiency of VA and VD exacerbates clinical symptoms in autistic children. Methods: The Autism Behavior Checklist, Childhood Autism Rating Scale (CARS), and Social Responsiveness Scale (SRS) were used to assess the symptoms of 332 children diagnosed as ASD. And the Gesell Developmental Scale (GDS) was used to evaluate neurodevelopment in children with ASD. Anthropometric measurement and questionnaire results were compared for all autistic children and 197 age- and gender-matched control children. Serum retinol levels were detected with high-performance liquid chromatography, and serum levels of 25-OH vitamin D were measured with an immunoassay method in the two groups. Results: The ZHA, ZWA, and ZBMIA of the children with ASD were significantly lower than those of the control children. Furthermore, higher proportions of children with picky eating, resistance to new foods, and eating problems were observed in the ASD group when compared with the control group. Serum retinol and 25-OH vitamin D levels in autistic children were significantly lower than those in the control children. Additionally, VA and VD co-deficiency impacts more on the symptoms and development in autistic children. Conclusions: We found that children with autism have more VA and VD deficiencies than control children, and VA and VD co-deficiency may exacerbate the symptoms of children with ASD.
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