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Updated: Jun 24, 2026

Multidisciplinary Approach to Obesity Management: A Case Report
Published on: May 30, 2025
Entry into romantic partnership is associated with obesity
Natalie S The1, Penny Gordon-Larsen
1Department of Nutrition, School of Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.
Romantic partnerships and cohabitation increase obesity risk. Shared environments influence weight gain and obesity-promoting behaviors, particularly in married couples or those cohabiting for over two years.
Area of Science:
- Public Health
- Sociology
- Behavioral Science
Background:
- Obesity risk is correlated between spouses, but mechanisms are unclear.
- Understanding how relationships influence obesity is crucial for public health interventions.
Purpose of the Study:
- To investigate the relationship between romantic partnership, cohabitation duration, and incident obesity.
- To examine the impact of partnership on obesity-promoting behaviors like physical activity and screen time.
Main Methods:
- Utilized two datasets from the National Longitudinal Study of Adolescent Health.
- Employed sex-stratified logistic regression and multinomial logistic regression analyses.
- Analyzed anthropometric measurements and self-reported behavioral data from adolescents and adult couples.
Main Results:
- Transitioning to cohabitation or marriage increased obesity risk compared to remaining single or dating.
- Partner concordance for obesity-related behaviors was highest in married couples and those cohabiting for ≥2 years.
- Shared household environments appear to influence obesity risk and behavioral concordance.
Conclusions:
- Romantic partnerships and cohabitation duration are significant factors in obesity development.
- Shared living environments play a role in obesity risk and partner behavioral concordance.
- Targeting shared household environments may be effective for obesity interventions.
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