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Exploring the relationship between vitamin D and basic personality traits.

Andrea Ubbenhorst¹, Sarah Striebich, Florian Lang

¹Department of Physiology, University of Tuebingen, Gmelinstr. 5, 72076, Tuebingen, Germany.

Psychopharmacology

|January 29, 2011

Summary

Higher levels of the active vitamin D form, 1,25-dihydroxyvitamin D (1,25(OH)(2)D(3)), are linked to increased extraversion and openness personality traits in healthy adults. This suggests vitamin D influences personality, potentially promoting extroverted and open behaviors.

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Area of Science:

Neuroscience
Endocrinology
Psychology

Background:

Hypovitaminosis D is associated with cognitive deficits and mental health conditions like depression and schizophrenia.
Vitamin D receptor mutant mice exhibit neophobic responses, suggesting a role for vitamin D in behavior.
The active form of vitamin D, 1,25-dihydroxyvitamin D (1,25(OH)(2)D(3)), is explored for its correlation with personality traits.

Purpose of the Study:

To investigate the relationship between plasma 1,25-dihydroxyvitamin D (1,25(OH)(2)D(3)) levels and basic personality traits in healthy adults.

Main Methods:

206 healthy volunteers (108 male, 98 female; age 31±13 years) participated.
The German version of the NEO Five-Factor Inventory (NEO-FFI) was used to assess personality.
Personality dimensions measured included neuroticism, extraversion, openness, agreeableness, and conscientiousness.

Main Results:

A significant positive correlation was found between 1,25(OH)(2)D(3) concentration and extraversion (r=0.202, p=0.004).
A significant positive correlation was also observed between 1,25(OH)(2)D(3) concentration and openness (r=0.148, p=0.034).

Conclusions:

1,25-dihydroxyvitamin D (1,25(OH)(2)D(3)) may influence personality traits, potentially promoting extroverted and open behaviors.
Potential mechanisms include calcium signaling, antioxidant and anti-inflammatory effects, neurotrophin stimulation, and improved metabolic/cardiovascular function.