Eating less than 4 servings of fruits and vegetables daily may worsen the risk of psychosis in an individual.

​This study examined the intake of fruits and vegetables in relation to the development of psychosis. Researchers looked at the dietary records of 1,286 adults aged 18-64 years who participated in the second Australian National Survey of Psychosis. 

Researchers found out that approximately 74% of subjects with psychosis consumed less than 4 portions of fruits and vegetables. This study strengthens the body of evidence supporting the view that inadequate intake of fruits and vegetables may be related to increased risk of psychosis.