Close navigation Navigation
MEMBER LOGIN STUDENT LOGIN
Encyclopedia of Nutritional Psychology

Psychosis

Evidence-informed definition Updated August 15, 2026 How to cite this entry

Search by term, condition, nutrient, behavior, or psychological concept.

Definition and context

Psychosis is defined as a severe disruption in reality perception characterized by delusions and/or hallucinations (West, 2013). It is a common shared symptom of various disorders, including psychotic and non-psychotic disorders and neurologic and medical conditions (Arciniegas, 2015).

Author and reviewer

Editorial responsibility
Written by Ephi Lu
Reviewed by CNP Encyclopedia Editorial Board
Evidence base

References and further reading

  1. Arciniegas DB. Psychosis. Continuum (Minneap Minn). 2015;21(3 Behavioral Neurology and Neuropsychiatry):715-736. doi:10.1212/01.CON.0000466662.89908.e7. PMID:26039850. View source
Citation guidance

How to cite this entry

Encyclopedia of Nutritional Psychology. (2026). Psychosis. The Center for Nutritional Psychology.

https://dev.nutritional-psychology.org/encyclopedia/psychosis/
Contribute to the ENP

Know a term that belongs in the Encyclopedia?

Share a nutritional psychology term with the CNP editorial team for consideration. Relevant submissions may be reviewed for future development and publication in the Encyclopedia of Nutritional Psychology.

Submission does not guarantee publication.
From definition to evidence

Continue exploring Psychosis

Browse connected concepts or move into CNP’s Research Library to explore supporting studies.

View the encyclopedia Explore related research