Ok I found the specific study that I was referencing.
https://www.vitalchoice.com/article/soldiers-and-omega-3s-pentagon-pitched-on-benefits
Soldiers and Omega-3s: Pentagon Pitched on Benefits
Vital Choice hears top researchers present compelling evidence in favor of providing omega-3s to soldiers for mental and physical benefits
11/12/2009
By Randy Hartnell with Craig Weatherby
Last month, we attended a unique conference, convened to present armed forces officers with evidence in favor of adding omega-3s to soldiers’ diets.
This was a very timely conference, given the recent rise in suicide rates among service people serving in war zones, and those who’ve returned from combat areas.
Historically, the suicide rate has been lower in the military than among civilians. In 2008 that pattern was reversed, with the suicide rate in the Army exceeding the age-adjusted rate in the civilian population (20.2 out of 100,000 vs. 19.2) — the highest rate since the Army began keeping records in 1980.
The invitation-only event — titled “Nutritional Armor for the Warfighter: Can Omega-3 Fatty Acids Enhance Stress Resilience, Wellness, and Military Performance?” — was intended for uniformed and civilian Defense Department personnel with responsibility for soldiers’ health and/or influence within the Pentagon.
Pretentious hogwash.
Prison studies where they supplement the food with vitamins and Omega-3 show reduced aggression and violence.