It is important to note that this study merely highlights an association, rather than saying T. gondii is responsible.
This is strong circumstantial evidence,
not definitive proof of cause,
and no studies have yet looked into potential underlying mechanisms.
However, a second study published in the journal Acta Psychiatrica Scandinavica actually looked at this relationship more directly. After scrutinizing 50 peer-reviewed studies on the subject, the researchers here showed that an individual infected with T. gondii was almost twice as likely to develop schizophrenia in later life.