Author Interviews, Psychological Science / 16.01.2025
Study Addresses Why Disordered Eating Often Arises During Adolescence
MedicalResearch.com Interview with:
[caption id="attachment_65957" align="alignleft" width="160"]
Xinyang Yu[/caption]
Xinyang Yu, PhD Candidate
Institute of Psychiatry
Psychology & Neuroscience
King’s College London
MedicalResearch.com: What is the background for this study?
Response: This study explores how genetics, brain development, and mental health work together to influence eating behaviours in young people. By analysing data from nearly 1,000 adolescents, we investigated the relationships between eating behaviours, genetic predispositions for high BMI, and changes in brain structure and mental health from ages 14 to 23. The aim was to understand why disordered eating behaviours, such as restrictive dieting or emotional overeating, often emerge alongside mental health issues during adolescence—a time when eating disorders are increasingly common.
Xinyang Yu[/caption]
Xinyang Yu, PhD Candidate
Institute of Psychiatry
Psychology & Neuroscience
King’s College London
MedicalResearch.com: What is the background for this study?
Response: This study explores how genetics, brain development, and mental health work together to influence eating behaviours in young people. By analysing data from nearly 1,000 adolescents, we investigated the relationships between eating behaviours, genetic predispositions for high BMI, and changes in brain structure and mental health from ages 14 to 23. The aim was to understand why disordered eating behaviours, such as restrictive dieting or emotional overeating, often emerge alongside mental health issues during adolescence—a time when eating disorders are increasingly common.



Dr. Annika Rosengren[/caption]
Annika Rosengren MD
Department of Molecular and Clinical Medicine, Institute of Medicine
Sahlgrenska Academy
University of Gothenburg,
Gothenburg, Sweden
MedicalResearch.com: What is the background for this study? What are the main findings?
Response: In an earlier study we found that while hospitalizations for heart failure decreased among people aged 55 and older in Sweden 1987-2006, there was a clear increase among those younger than 45 years, particularly in young men. We thought that increasing body weight in the population might be a factor behind this.
We used anonymized data from more than 1.6 million Swedish men from the Swedish conscript registry aged on average 18 and followed them from adolescence onwards. Those who were overweight as teenagers were markedly more likely to develop heart failure in early middle age. The increased risk of heart failure was found already in men who were within the normal body weight range (a body mass index of 18.5 to 25) in adolescence, with an increased risk starting in those with a BMI of 20 and rising steeply to a nearly ten-fold increased risk in those who were very obese, with a BMI of 35 or over.
Among men with a BMI of 20 and over, the risk of heart failure increased by 16% with every BMI unit, after adjustments for factors that could affect the findings, such as age, year of enlistment into the Swedish armed forces, other diseases, parental education, blood pressure, IQ, muscle strength and fitness.



