Gender-Specific Relationship between Obesity and Major Depression.
Li Li1, Barbara A Gower2, Richard C Shelton1
1Department of Psychiatry and Behavioral Neurobiology, University of Alabama at Birmingham, Birmingham, AL, United States.
Frontiers in Endocrinology
|November 28, 2017
Summary
This study reveals significant gender differences in the obesity-depression link. Elevated leptin levels may explain why obesity is more strongly associated with major depressive disorder (MDD) in women.
Area of Science:
- Psychiatry
- Endocrinology
- Obesity Research
Background:
- A bidirectional relationship exists between obesity and major depressive disorder (MDD), but findings are inconsistent.
- Sex differences may explain heterogeneity in MDD-obesity association studies.
- Potential mechanisms linking MDD and obesity require further investigation.
Purpose of the Study:
- To investigate the differential effect of sex on the relationship between MDD and obesity.
- To explore potential biological mechanisms underlying the MDD-obesity association.
Main Methods:
- Participants diagnosed with MDD were assessed for depression severity using the Hamilton Depression Rating Scale.
- Body Mass Index (BMI) and body composition (total fat, trunk fat, android fat, visceral fat) were measured.
- Serum inflammatory factors and leptin levels were analyzed.
Main Results:
- Depressed women showed higher BMI and total body fat; depressed men had greater visceral fat mass.
- Depression correlated with obesity measures (BMI, total fat, visceral fat) only in women.
- Elevated leptin levels were observed in depressed women compared to depressed men, independent of adiposity.
Conclusions:
- Significant gender differences exist in the association between obesity and MDD.
- Elevated leptin may be a key mechanism linking MDD and obesity in women.
- Personalized therapies targeting gender-specific relationships can improve outcomes.
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