Study shows biological changes that could underlie higher psychosis risk in immigrants

A new study could explain how migrating to another country increases a person's risk of developing schizophrenia, by altering brain chemistry. Immigrants had higher levels of the brain chemical dopamine than non-immigrants in the study, conducted by the Centre for Addiction and Mental Health (CAMH) in Toronto and the Institute of Psychiatry, Psychology and Neuroscience, King's College London in the U.K. Abnormal dopamine levels are linked to symptoms of schizophrenia.

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