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March 5, 2026JAMA Network Open3 citationsOpen Access

Ultraprocessed Food Consumption and Behavioral Outcomes in Canadian Children

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MKMeaghan E KavanaghZCZheng Hao ChenLSLisa Smithson

Key Points

  • The study investigates the link between ultraprocessed food consumption and behavioral outcomes in preschool children.
  • Cohort study design focused on preschoolers in Canada.
  • Assessment of dietary intake categorized into ultraprocessed and minimally processed foods.
  • Behavioral and emotional symptoms evaluated at age 5.
  • Higher intake of ultraprocessed foods linked to negative behavioral and emotional symptoms.
  • Replacing ultraprocessed foods with minimally processed foods may support healthier behavior.
  • Potential long-term mental health benefits noted from dietary changes in early childhood.

Abstract

In this cohort study of preschoolers in Canada, higher UPF intake was associated with adverse behavioral and emotional symptoms by age 5 years. These findings suggest that replacing UPF with MPF during the preschool years may support healthier behavioral development, with potential benefits for long-term mental health. These findings also support ongoing policy actions that promote MPF and underscore the need for early-life dietary interventions.

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Cite This Study

Kavanagh et al. (2026) studied this question.

synapsesocial.com/papers/69a91dd2d6127c7a504c10cchttps://doi.org/10.1001/jamanetworkopen.2026.0434
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