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Angelina R Sutin¹, Alan B Zonderman, Manuela Uda

¹Florida State University College of Medicine, 1115 W. Call Street, Tallahassee, FL 32306, USA. angelina.sutin@med.fsu.edu

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Summary

This summary is machine-generated.

Low conscientiousness, linked to impulsivity, correlates with higher leptin levels, potentially contributing to obesity. Neuroticism, however, showed no association with leptin in this study on personality and obesity.

Keywords:

appetite conscientiousness depression impulsivity inflammation leptin neuroticism obesity personality traits self-discipline

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Area of Science:

Behavioral genetics
Endocrinology
Psychometrics

Background:

Obesity is linked to personality traits like neuroticism and conscientiousness.
Hormones such as leptin, which regulate appetite and metabolism, may influence personality.
Understanding the interplay between personality, hormones, and obesity is crucial for public health.

Purpose of the Study:

To investigate the association between leptin levels and the Five Factor Model personality traits.
To explore potential hormonal mechanisms linking personality traits to obesity.

Main Methods:

Utilized data from 5214 participants in the SardiNIA project.
Assessed personality traits using the Revised NEO Personality Inventory.
Measured circulating leptin levels via blood sample analysis.

Main Results:

A significant inverse association was found between conscientiousness and leptin levels (r = -0.05, p < .001).
This association persisted even after controlling for body mass index, waist circumference, and inflammatory markers.
No significant association was observed between neuroticism and leptin levels (r = 0.01, p = .31).

Conclusions:

Low conscientiousness may contribute to obesity through mechanisms like leptin resistance.
The relationship between neuroticism and obesity likely involves other physiological or behavioral factors.
Personality traits, particularly conscientiousness, are associated with hormonal markers relevant to metabolism.