One Dietary Supplement Was Found to Lower Aggression by Up to 28%

A 2024 meta-analysis found omega-3 supplements, including fish oil, were linked to a modest short-term reduction in aggressive behavior.

Researchers reviewed 29 randomized controlled trials with 3,918 participants across ages and settings.

The effect appeared to cover both reactive and proactive aggression.

The findings point to a low-cost dietary option, but larger and longer studies are still needed.