Is eating fish better than taking fish oil?
Updated 4 Nov 2026
Short answer
For some conditions, the evidence is stronger for seafood than for omega-3 supplements.[1] Many of those findings come from observational studies. They cannot easily separate omega-3 fats from other nutrients in fish, or from the healthier habits of people who eat fish.[2][1]
Trials say little about this question: a Cochrane review found little evidence on the effects of eating fish.[3] Three ounces (about 85 g) of cooked farmed salmon gives 1.24 g of DHA and 0.59 g of EPA, about as much as six typical capsules.[2]
Sources (3)
- Omega-3 Supplements: What You Need To Know. NIH National Center for Complementary and Integrative Health, 2024. www.nccih.nih.gov
- Omega-3 Fatty Acids: Fact Sheet for Health Professionals. NIH Office of Dietary Supplements. ods.od.nih.gov
- Omega-3 fatty acids for the primary and secondary prevention of cardiovascular disease. Abdelhamid AS, Brown TJ, Brainard JS, Biswas P, Thorpe GC, Moore HJ, et al. Cochrane Database Syst Rev, 2020. PMID 32114706
More about fish oil
What is fish oil?Does fish oil reduce inflammation?How much EPA and DHA is in a fish oil capsule?What is fish oil used for?Should fish oil be taken with food?Does fish oil prevent heart attacks?For education; not medical advice. Talk to a doctor before you start, stop or change a supplement.