Ultraprocessed food consumption and behavioral outcomes in Canadian children

JAMA Network Open

2026-03-03

(Press-News.org) About The Study: In this cohort study of preschoolers in Canada, higher ultraprocessed foods (UPF) intake was associated with adverse behavioral and emotional symptoms by age 5. These findings suggest that replacing UPF with minimally processed foods (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.

Corresponding Author: To contact the corresponding author, Kozeta Miliku, MD, PhD, email kozeta.miliku@utoronto.ca.

To access the embargoed study: Visit our For The Media website at this link https://media.jamanetwork.com/

(doi:10.1001/jamanetworkopen.2026.0434)

Editor’s Note: Please see the article for additional information, including other authors, author contributions and affiliations, conflict of interest and financial disclosures, and funding and support.

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About JAMA Network Open: JAMA Network Open is an online-only open access general medical journal from the JAMA Network. On weekdays, the journal publishes peer-reviewed clinical research and commentary in more than 40 medical and health subject areas. Every article is free online from the day of publication.

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