Is Omega-3 protective against mental illness?

Research results published in Archives of General Psychiatry indicate that daily fish oil supplementation can be as effective as drugs at preventing the development of mental illness in those at highest risk. A team composed of scientists from Austria, Australia and Switzerland applied the regime to 81 people deemed to be at particularly high risk of developing psychosis â€" either because of strong family history or because they already showed mild symptoms. They found that a three-month course of the supplement cut the rate of psychotic illness by a quarter.

BBC