Cited by 101Obesity, Physical Activity, DietEating Disorders and BehaviorsMental Health Treatment and Access

Body mass index and common mental disorders: exploring the shape of the association and its moderation by age, gender and education

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McCrea, R L, Berger, Y G, King, M B·2012·International Journal of Obesity

Abstract

Background Obesity is known to be associated with increased prevalence of common mental disorders (for example, depression and anxiety), and there is evidence of age and gender differences in this relationship. However, categorisation of body mass index (BMI) and age has limited our ability to understand the nature of these differences. This study used continuous values of BMI and age to explore the shape of the association between common mental disorders and BMI and whether it varied with age, gender and education.Method The analysis used cross-sectional data on 7043 adults from the English 2007 Adult Psychiatric Morbidity Survey. Common mental disorders were assessed using the revised Clinical Interview Schedule (CIS-R). Cubic splines allowed BMI and age to have non-linear effects in the logistic regression analysis.Results BMI was strongly associated with the presence of common mental disorders, and there was clear evidence that this association varied with gender and age. In young women the probability of having a disorder increased as BMI increased, whereas in young men the relationship was U-shaped-probabilities were higher for both underweight and obese men. These associations diminished in older age groups, particularly when potential confounders such as physical health were taken into account. There was no evidence that the relationship varied with education.Conclusions Age and gender differences must be taken into account when investigating the link between BMI or obesity and common mental disorders. Furthermore, results of studies that categorise BMI may be highly sensitive to the width of the 'normal weight' reference category.

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Authors
McCrea, R. L., Berger, Y. G., & King, M. B.
Affiliations
  • University College London (GB)
  • University of Southampton (GB)
Corresponding author
McCrea, R L
Venue
International Journal of Obesity
Published
2011-03-22
Volume
36
Issue
3
Pages
414-421
ISSN
  • 0307-0565 (ISSN-L)
  • 1476-5497
OpenAlex
W1966061208
Cited by
101
References
23
Citations by year
2026: 3 · 2025: 2 · 2024: 4 · 2023: 9 · 2022: 10 · 2021: 10 · 2020: 4 · 2019: 4 · 2018: 3 · 2017: 8 · 2016: 10 · 2015: 6 · 2014: 10 · 2013: 10 · 2012: 7
FWCI
8.79
Type
journal article
Language
en
Open access
Locations
  • International Journal of Obesity (publishedVersion)
  • PubMed (publishedVersion)
  • ePrints Soton (University of Southampton) (acceptedVersion)
  • UCL Discovery (University College London) (submittedVersion)
Topics
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Obesity, Physical Activity, Diet
  • Social Sciences › Psychology › Clinical Psychology › Eating Disorders and Behaviors
  • Social Sciences › Psychology › Social Psychology › Mental Health Treatment and Access
Keywords
body mass index, obesity, common mental disorders, depression, anxiety, age differences, gender differences, education, underweight, U-shaped relationship, nonlinear relationship
MeSH terms
Adolescent, Adult, Age Factors, Aged, Anxiety, Cross-Sectional Studies, Depression, Educational Status, England, Female, Humans, Male, Middle Aged, Obesity, Sex Factors, Body Mass Index, Prevalence, Age Distribution, Sex Distribution, Young Adult

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