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Hypothalamic-pituitary-adrenal axis dysfunction in non-clinical psychosis
Vijay Anand Mittal1, Joseph Michael Orr, Andrea Pelletier
1Department of Psychology and Neuroscience, University of Colorado Boulder, Boulder, CO 80309-0345, USA. vijay.mittal@colorado.edu
Individuals with high levels of non-clinical psychosis (NCP) show elevated cortisol, suggesting hypothalamic-pituitary-adrenal-axis dysfunction may be part of a psychosis continuum. This finding is similar to that seen in schizophrenia patients.
Area of Science:
- Neuroscience
- Psychiatry
- Endocrinology
Background:
- Psychosocial stress is linked to psychosis, but cortisol levels in non-clinical psychosis (NCP) remain understudied.
- Elevated cortisol is a known characteristic of schizophrenia.
Purpose of the Study:
- To investigate whether elevated cortisol levels, similar to those in schizophrenia, are present in individuals with non-clinical psychosis (NCP).
- To explore the potential role of hypothalamic-pituitary-adrenal-axis (HPAA) dysfunction in a psychosis continuum.
Main Methods:
- Cortisol levels were measured in participants categorized into High-NCP and Low-NCP groups.
- Resting cortisol was assessed to evaluate HPAA activity.
Main Results:
- Individuals in the High-NCP group exhibited significantly elevated resting cortisol levels compared to the Low-NCP group.
- These findings suggest a potential biological link between NCP and more severe psychotic disorders.
Conclusions:
- Elevated resting cortisol in High-NCP individuals indicates HPAA dysregulation.
- This supports the concept of a psychosis continuum where HPAA dysfunction may be a common underlying factor across different severity levels.
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