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January 6, 2026Korean Journal of Community NutritionOpen Access

Ultra-processed food intake and dietary behaviors in Korean adolescents: a cross-sectional study based on the 2019–2023 Korea National Health and Nutrition Examination Survey

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Authors

JKJin-A KimSLSim-Yeol Lee

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Overview

Cross-sectional study finds higher ultra-processed food intake linked to poorer nutritional status in adolescents.

Key Points

  • To investigate the intake of ultra-processed foods and dietary behaviors in Korean adolescents.
  • Used 24-hour dietary recall data from the Korea National Health and Nutrition Examination Survey (2019–2023)
  • Included 1,720 adolescents aged 12–18 years, categorized into quartiles by UPF intake
  • Examined nutritional status and healthy dietary practices using Health Plan 2030 indicators
  • Lowest protein and vitamin intake found in the highest quartile of UPF intake
  • Calcium intake increased from 47.68% to 58.51% across quartiles
  • Healthy dietary practices were lowest in the fourth quartile (22.18%)
  • Higher quartiles showed significantly lower fat, fruit, and vegetable intake

Cite This Study

Kim et al. (2025) studied this question.

synapsesocial.com/papers/695d85653483e917927a4f6ahttps://doi.org/10.5720/kjcn.2025.00297
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1The Relationship Between Ultra-Processed Food Consumption Patterns and the Nutritional Status of Adolescents in Urban Areas2025 · 1 citations
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  4. 4Identifying the patterns of ultra-processed food consumption and their characteristics in the UK adults using the UK National Diet and Nutritional Surveys 2008/09 to 2018/192025
  5. 5Diet quality and consumption of ultra-processed foods according to age groups in Brazil: Insights from the National Dietary Survey 2017-20182025 · 6 citations