Body composition, fitness, and mental health in preadolescent children

JAMA Network Open

2025-08-26

(Press-News.org) About The Study: In this cross-sectional study of preadolescent children, greater lean mass and higher fitness were associated with fewer anxiety and depression symptoms, while higher visceral adipose tissue was associated with increased symptoms of both. Body fat percentage was only associated with greater anxiety. These findings highlight the roles of body composition in mental health and underscore the value of early identification of physical health markers to support children’s well-being and development.

Corresponding author: To contact the corresponding author, Lauren B. Raine, M.P.H., Ph.D., email l.raine@northeastern.edu.

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

(doi: 10.1001/jamanetworkopen.2025.28868)

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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Body composition, fitness, and mental health in preadolescent children

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