• Dianne Neumark-Sztainer, Melanie M Wall, Chen Chen, Nicole I Larson, Mary J Christoph, and Nancy E Sherwood.
• Division of Epidemiology and Community Health, School of Public Health, University of Minnesota, Minneapolis, Minnesota. Electronic address: neumark@epi.umn.edu.
• Am J Prev Med. 2018 Aug 1; 55 (2): 133-141.

IntroductionDetermining the population-based scope and stability of eating, activity, and weight-related problems is critical to inform interventions. This study examines: (1) the prevalence of eating, activity, and weight-related problems likely to influence health; and (2) the trajectories for having at least one of these problems during the transition from adolescence to adulthood.MethodsProject EAT I-IV (Eating and Activity in Teens and Young Adults) collected longitudinal survey data from 858 females and 597 males at four waves, approximately every 5 years, from 1998 to 2016, during the transition from adolescence to adulthood. Analyses were conducted in 2017-2018. Measures included high fast-food intake (≥3 times/week), low physical activity (<150 minutes/week), unhealthy weight control, body dissatisfaction, and obesity status.ResultsAmong females, the prevalence of having at least one eating, activity, or weight-related problems was 78.1% at Wave 1 (adolescence) and 82.3% at Wave 4 (adulthood); in males, the prevalence was 60.1% at Wave 1 and 69.2% at Wave 4. Of all outcomes assessed, unhealthy weight control behaviors had the highest prevalence in both genders. The stability of having at least one problem was high; 60.2% of females and 34.1% of males had at least one problematic outcome at all four waves.ConclusionsThe majority of young people have some type of eating, activity, or weight-related problem at all stages from adolescence to adulthood. Findings indicate a need for wide-reaching interventions that address a broad spectrum of eating, activity, and weight-related problems prior to and throughout this developmental period.Copyright © 2018 American Journal of Preventive Medicine. Published by Elsevier Inc. All rights reserved.

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