priors.science/reviews/ultra-processed-foods

Ultra Processed Foods

The current evidence on 9 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.

10claims tracked

9assessed

105primary papers reviewed

21 Oct 2026latest evidence review

Overall grades reviewedby 1 independent expert · Oct 2026 · release 2026-q4

0 Established · 6 Likely · 3 Uncertain · 0 Doubtful | four-reviewer panel · PICO Framework

ClaimStandingEvidence certaintyCorpus

Ultra-processed food promotes weight gainCardiometabolicLikely83%21

Ultra-processed food diets raise energy intakeMechanism MentalLikely79%18

Ultra-processed food raises cardiovascular disease riskCardiometabolicLikely76%27

Ultra-processed food raises depression riskMechanism MentalLikely74%21

Ultra-processed food raises type 2 diabetes riskCardiometabolicLikely72%24

Ultra-processed food raises colorectal cancer riskMortality CancerLikely71%18

Ultra-processed food raises hypertension riskCardiometabolicUncertain67%23

Ultra-processed food raises all-cause mortalityMortality CancerUncertain63%20thin basis

Ultra-processed food raises overall cancer riskMortality CancerUncertain55%23

Track Ultra Processed Foods.

These claims are re-checked against new research as it is published. 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.

A standing changes only when the score moves past a boundary by more than 4 points, the re-scoring noise floor; a score within 4 points of a boundary keeps its previous standing.