USDA-led study finds farmed salmon's Omega-3 levels have dropped sharply
New research led by USDA scientists shows that farmed salmon now contain significantly lower levels of heart-healthy Omega-3 fatty acids than in the past. The decline stems from producers replacing wild fish-based feed, once heavily depleted from overfishing, with land-based ingredients like soy and canola oil. The findings echo a similar 2016 study that flagged the same feed-driven nutritional drop.