Risk found to be highest among black African people, as experts call for better mental health provision

The analysis also revealed that north African adults, black people of all ages and non-migrants who were black or from mixed ethnic backgrounds were at greater risk of psychosis compared with white non-migrants. There was no such increase for white or Asian migrants.

While the exact association was hard to pin down because of the small size of the latter group in the study, the risk of psychosis was at least two to three times higher for these groups than for white people who had not migrated.
https://www.theguardian.com/society/2024/oct/02/migration-adolescence-psychosis-risk-study