My understanding is, that while fish consumption is correlated with better health, the supposed effects of omega-3 fats in observational studies are not proven

My understanding is, that while fish consumption is correlated with better health, the supposed effects of omega-3 fats in observational studies are not proven in controlled studies with omega 3 supplements (https://www.cochrane.org/news/new-cochrane-health-evidence-challenges-belief-omega-3-supplements-reduce-risk-heart-disease https://www.cochrane.org/news/new-cochrane-health-evidence-c...)