 People suffering from psychosis have increased risks of cardiovascular disease, obesity, and type 2 diabetes, as well as reduced life expectancy. Limited data exists on the dietary habits of people with first episode psychosis compared to the general population. This study evaluated the diets of 143 patients with first episode psychosis and found significant differences in total energy intake, total fat consumption, and protein consumption when compared to the national sample. Additionally, men with first episode psychosis had significantly lower intakes of folate, iron, selenium, vitamin D, and zinc, while women had significantly lower intakes of iron and vitamin D. These findings suggest that further investigation into dietary habits among those with first episode psychosis is necessary to ensure adequate nutrition and reduce the risk of chronic diseases.