from Eurekalert, Public release date: 21-Jun-2010

Centre hospitalier de l'Université de Montréal

Encouraging results from the largest clinical study ever conducted on treating depression with Omega-3

The use of Omega-3 supplements is effective among patients with major depression who do not have anxiety disorders, according to a study directed by Dr. François Lespérance of the Centre de recherche du Centre hospitalier at the Université de Montréal (CRCHUM), head of CHUM's Department of Psychiatry and a professor at the Université de Montréal. The study was published June 15 in the online Journal of Clinical Psychiatry.

This was the largest study ever conducted assessing Omega-3's efficacy in treating major depression. It was carried out in conjunction with researchers from centres affiliated with the UdM's Réseau universitaire intégré de santé (RUIS), from McGill University, Université Laval in Quebec City and Queen's University in Kingston, Ontario. The study was supported by the European firm isodisnatura, the Fondation du CHUM and the CRCHUM.

Initial analyses failed to clearly demonstrate the effectiveness of Omega-3 for all patients taking part in the study. Other analyses, however, revealed that Omega-3 improved depression symptoms in patients diagnosed with depression unaccompanied by an anxiety disorder. Efficacy for these patients was comparable to that generally observed with conventional antidepressant treatment.