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Structural and functional brain changes in children and adolescents with obesity.
Obes. Rev.:e70001 (2025)
Obesity, particularly pediatric obesity, has dramatically increased over the last three decades, with a wide range of detrimental health outcomes, including negative consequences for brain neurodevelopment. The present article reviewed magnetic resonance imaging studies between January 2011 and March 2024 examining the brain's role in pediatric obesity, including parental influences and diverse interventions. A literature search identified 97 eligible MRI studies in the pediatric population. Findings suggest that altered brain structures and functions in pediatric obesity are strongly dependent on the developmental stage of children and adolescents. The function and structure of limbic regions, such as the hippocampus, amygdala, and striatum, as well as the prefrontal cortex, seem to be particularly affected by higher body mass index during development. In response to palatable foods, children and adolescents with excess weight have increased activation in reward-related regions and decreased activation in regions involved in interoceptive signal processing, especially during decision processes. In addition, children of mothers with obesity and gestational diabetes mellitus show alterations in brain structure and function independent of their current obesity. Behavioral, exercise, and weight-loss intervention studies showed promising effects on the brain, with increased structural integrity, decreased brain responses to reward, and strengthened inhibitory brain responses in children and adolescents with excess weight after the intervention.
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Publication type
Article: Journal article
Document type
Review
Keywords
Adolescents ; Brain ; Children ; Magnetic Resonance Imaging ; Obesity; Gestational Diabetes-mellitus; Food Commercials; Individual-differences; Hypothalamic Gliosis; Physical-fitness; Decision-making; Neural Response; Energy-intake; Weight-gain; Overweight
ISSN (print) / ISBN
1467-7881
e-ISSN
1467-789X
Journal
Obesity Reviews
Quellenangaben
Article Number: e70001
Publisher
Blackwell
Publishing Place
Oxford
Reviewing status
Peer reviewed
Grants
Federal Ministry of Education and Research (BMBF) - China Scholarship Council (CSC)
Federal Ministry of Education and Research
Federal Ministry of Education and Research