{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,13]],"date-time":"2026-10-13T07:03:12Z","timestamp":1791874992070,"version":"4.3.4"},"reference-count":34,"publisher":"American Medical Association (AMA)","issue":"9","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JAMA Netw Open"],"abstract":"Importance<\/jats:title>Neurodevelopmental disorders (NDDs) such as autism spectrum disorder (ASD) and attention-deficit\/hyperactivity disorder (ADHD) are increasingly common. Individuals with NDDs have heightened obesity risks, but long-term data on body mass index (BMI) trends over time in this population are lacking.<\/jats:p><\/jats:sec>Objective<\/jats:title>To assess secular BMI changes from 2004 to 2020 among children with NDDs compared with those without NDDs.<\/jats:p><\/jats:sec>Design, Setting, and Participants<\/jats:title>This repeated cross-sectional study used data from the Child and Adolescent Twin Study in Sweden. Children born between January 1, 1992, and December 31, 2010, were screened for neurodevelopmental symptoms using the Autism-Tics, ADHD, and Other Comorbidities inventory between July 2004 and April 2020 when they were 9 or 12 years of age. Data analysis was conducted between September 27, 2023, and January 30, 2024.<\/jats:p><\/jats:sec>Main Outcomes and Measures<\/jats:title>BMI percentiles (15th, 50th, and 85th) were modeled using quantile regression and compared between youths with and without NDDs. Secular changes in BMI percentiles over time spanning 2004 to 2020 were evaluated and stratified by NDD subtype.<\/jats:p><\/jats:sec>Results<\/jats:title>The cohort included 24\u202f969 Swedish twins (12\u202f681 [51%] boys) born between 1992 and 2010, with mean (SD) age of 9 (0.6) years. Of these, 1103 (4%) screened positive for 1 or more NDDs, including ADHD, ASD, and\/or learning disability. Results indicated that at the 85th BMI percentile, there was a greater increase in BMI from 2004 to 2020 among youths with NDDs compared with those without NDDs (\u03b2 for interaction [\u03b2int<\/jats:sub>] between NDD status and time, 1.67; 95% CI, 0.39-2.90). The greatest divergence was seen for ASD (\u03b2int<\/jats:sub>, 2.12; 95% CI, 1.26-3.70) and learning disability (\u03b2int<\/jats:sub>, 1.92; 95% CI, 0.65-3.82). Within the latest cohort (2016-2020), the 85th BMI percentile was 1.99 (95% CI, 1.08-2.89) points higher among children with NDDs compared with those without NDDs.<\/jats:p><\/jats:sec>Conclusions and Relevance<\/jats:title>In this repeated cross-sectional study, at the higher end of the BMI distribution, children with NDDs had significantly greater increases in BMI compared with peers without NDDs over a 16-year period, highlighting an increasing risk of overweight over time in youths with NDDs compared with those without NDDs. Targeted obesity prevention efforts for this high-risk population are needed.<\/jats:p><\/jats:sec>","DOI":"10.1001\/jamanetworkopen.2024.31543","type":"journal-article","created":{"date-parts":[[2024,9,4]],"date-time":"2024-09-04T15:02:32Z","timestamp":1725462152000},"page":"e2431543","source":"Crossref","is-referenced-by-count":8,"title":["Trends in Body Mass Index Among Individuals With Neurodevelopmental Disorders"],"prefix":"10.1001","volume":"7","author":[{"given":"Miguel","family":"Garcia-Argibay","sequence":"first","affiliation":[{"name":"School of Medical Sciences, Faculty of Medicine and Health, \u00d6rebro University, \u00d6rebro, Sweden"},{"name":"Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden"},{"name":"Centre for Innovation in Mental Health, School of Psychology, Faculty of Environmental and Life Sciences, University of Southampton, Southampton, United 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