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ScientificWorldJournal. 2013 Apr 15;2013:315429. doi: 10.1155/2013/315429. Print 2013.

Eating problems and overlap with ADHD and autism spectrum disorders in a nationwide twin study of 9- and 12-year-old children.

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1
Department of Clinical Sciences, Child and Adolescent Psychiatry, Lund University, Sofiavägen 2D, Lund, Sweden. maria.rastam@med.lu.se

Abstract

AIM. To establish the prevalence of restrictive eating problems, the overlap and association with attention-deficit/hyperactivity disorder (ADHD), and autism spectrum disorders (ASD) and to estimate the heritability of eating problems in a general population sample of twins aged 9 and 12. METHODS. Parents of all Swedish 9- and 12-year-old twin pairs born between 1993 and 1998 (n = 12,366) were interviewed regarding symptoms of ADHD, ASD, and eating problems (EAT-P). Intraclass correlations and structural equation modelling were used for evaluating the influence of genetic and environmental factors. Cross-twin, cross-trait correlations were used to indicate a possible overlap between conditions. RESULTS. The prevalence of eating problems was 0.6% in the study population and was significantly higher in children with ADHD and/or ASD. Among children with eating problems, 40% were screened positive for ADHD and/or ASD. Social interaction problems were strongly associated with EAT-P in girls, and impulsivity and activity problems with EAT-P in boys. The cross-twin, cross-trait correlations suggested low correlations between EAT-P and ADHD or EAT-P and ASD. Genetic effects accounted for 44% of the variation in liability for eating problems. CONCLUSIONS. In the group with eating problems, there was a clear overrepresentation of individuals with ADHD and/or ASD symptoms.

PMID:
23690743
PMCID:
PMC3654255
DOI:
10.1155/2013/315429
[Indexed for MEDLINE]
Free PMC Article
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