August 11, 2015 — Eating more fish or taking regular fish oil supplements may help prevent psychosis in those most at risk, researchers claim.
A three month course of daily fish oil capsules appeared to significantly reduce the rate of psychotic disorders in young people, an improvement that seemed to persist when doctors assessed their mental health seven years later.
But while the findings are intriguing, they come from a very small study of teenagers and young adults. The benefits must now be shown in a much larger group before doctors can make any recommendations about the use of fish oils to prevent mental health problems.
Paul Amminger at the University of Melbourne reported in 2010 that a three month course of daily fish oil capsules appeared to stave off psychotic illnesses in teenagers and young adults aged 13 to 24 deemed at high risk of developing the disorders. Seven years on, his group has now revisited 71 of the original 81 participants and shown that the protective effects seem to persist.
Writing in the journal Nature Communications, the scientists report that 4 out of 41 of those who took fish oil for three months had developed psychosis in the seven years since, compared with 16 out of 40 who received a placebo capsule during the trial.