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
116primary papers reviewed
5 Jul 2026latest evidence review
Weeklyre-scored against new papers
1 Established · 3 Likely · 6 Uncertain · 2 Doubtful  |  four-reviewer panel · PICO Framework
SignalClaimStandingEvidence certaintyCorpus
StableOmega-3 lowers triglyceridesTGEstablished88%10
StableOmega-3 raises atrial fibrillation riskCVLikely70%10
StableDocosahexaenoic acid raises low-density lipoprotein cholesterolTGLikely69%10
StableOmega-3 in rheumatoid arthritisInflamLikely66%10
StableIcosapent ethyl cuts cardiovascular eventsCVUncertain62%10
StableOmega-3 reduces preterm birthPregUncertain60%10
StableOmega-3 for depressionNeuroUncertain51%10
StableOmega-3 for dry eyeInflamUncertain48%10
StableOmega-3 for childhood attention-deficit/hyperactivity disorderNeuroUncertain42%10
StablePrenatal omega-3 and child brain developmentPregUncertain42%10
StableOmega-3 and cognitive declineNeuroDoubtful32%10
StableOmega-3 and cardiovascular mortalityCVDoubtful24%10
Standing — what the evidence certainty means
Established≥ 85%Strong, consistent evidence. Unlikely to change.
Likely65–84%Well supported, with some gaps or indirect evidence.
Uncertain40–64%Mixed or limited evidence. Genuinely open.
Doubtful15–39%Little support; the weight of evidence leans against it.
Refuted< 15%The evidence contradicts it — confidently false as stated.
Recent signal
strengthenedNew evidence raised the certainty since the last review.
weakenedNew evidence lowered the certainty since the last review.
newA claim added to the review recently.
StableNo recent change to the standing.
Standing, evidence certainty and corpus are always shown. The study behind each move, why it moved, and the sceptic’s challenge are delivered to subscribers.
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