Reduced bone cortical thickness in boys with autism or autism spectrum disorder

Division-of Epidemiology, Statistics and Prevention Research, National Institute of Child Health and Human Development, National Institutes of Health, Department of Health and Human Services, Bethesda, MD 20892-7510, USA.
Journal of Autism and Developmental Disorders (Impact Factor: 3.34). 09/2007; 38(5):848-56. DOI: 10.1007/s10803-007-0453-6
Source: PubMed

ABSTRACT Bone development, casein-free diet use, supplements, and medications were assessed for 75 boys with autism or autism spectrum disorder, ages 4-8 years. Second metacarpal bone cortical thickness (BCT), measured on hand-wrist radiographs, and % deviations in BCT from reference medians were derived. BCT increased with age, but % deviations evidenced a progressive fall-off (p = .02): +3.1 +/- 4.7%, -6.5 +/- 4.0%, -16.6 +/- 3.4%, -19.4 +/- 3.7%,-24.1 +/- 4.4%, at ages 4-8, respectively, adjusting for height. The 12% of the boys on casein-free diets had an overall % deviation of -18.9 +/- 3.7%, nearly twice that of boys on minimally restricted or unrestricted diets (-10.5 +/- 1.3%, p < .04), although even for boys on minimally restricted or unrestricted diets the % deviation was highly significant (p < .001). Our data suggest that the bone development of autistic boys should be monitored as part of routine care, especially if they are on casein-free diets.

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Feb 23, 2015