priors.science/reviews/omega-3-fatty-acids

Omega-3 Fatty Acids

The current evidence on 12 claims, ordered from most established to most contested. Each score is the panel’s evidence certainty — how firmly the literature supports the claim as stated.

12claims tracked
124primary papers reviewed
9 Aug 2026latest evidence review
Weeklyre-scored against new papers
1 Established · 2 Likely · 3 Uncertain · 5 Doubtful · 1 Refuted  |  four-reviewer panel · PICO Framework
ClaimStandingEvidence certaintyCorpus
Omega-3 lowers triglyceridesTGEstablished88%10
Icosapent ethyl cuts cardiovascular eventsCVLikely73%12
Omega-3 raises atrial fibrillation riskCVLikely71%10
Docosahexaenoic acid raises low-density lipoprotein cholesterolTGUncertain69%10
Omega-3 in rheumatoid arthritisInflamUncertain66%10
Omega-3 reduces preterm birthPregUncertain62%12
Omega-3 for dry eyeInflamLong-standingDoubtful47%11
Omega-3 for depressionNeuroDoubtful45%11
Omega-3 for childhood attention-deficit/hyperactivity disorderNeuroLong-standingDoubtful42%10
Prenatal omega-3 and child brain developmentPregDoubtful40%11
Omega-3 and cognitive declineNeuroDoubtful31%11
Omega-3 and cardiovascular mortalityCVRefuted22%10
Track Omega-3 Fatty Acids.
These claims are re-scored against new papers every week. Track this topic for the full review, including each claim’s challenge and the papers behind it.
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Standing — what the evidence certainty means
Established≥ 85%Strong, consistent evidence. Unlikely to change.
Likely70–84%Well supported, with some gaps or indirect evidence.
Uncertain50–69%Mixed or limited evidence. Genuinely open.
Doubtful30–49%Little support; the weight of evidence leans against it.
Refuted< 30%The evidence contradicts it — confidently false as stated.
Where the evidence sits in time
Long-standingMost of this evidence is older than the rest of this field.