priors.science/reviews/artificial-sweeteners

Artificial Sweeteners

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.

12claims tracked
9assessed
99primary papers reviewed
26 Oct 2026latest evidence review
0 Established · 2 Likely · 2 Uncertain · 3 Doubtful · 2 Refuted  |  four-reviewer panel · PICO Framework
ClaimStandingEvidence certaintyCorpus
Non-nutritive sweeteners alter gut microbiomeMicrobiomeLikely73%16
Non-nutritive sweetener substitution reduces body weightWeightLikely73%13
Erythritol linked to cardiovascular eventsCardioUncertain55%20
Sweeteners linked to cardiovascular diseaseCardioUncertain52%15
Microbiome shift impairs glucose toleranceMicrobiomeDoubtful43%12
Non-nutritive sweeteners increase appetite or energy intakeAppetiteDoubtful40%12
Sweetness-calorie uncoupling disrupts appetiteAppetiteDoubtful35%12
Non-nutritive sweeteners acutely raise glucose or insulinGlycaemiaRefuted20%12
Sweetener intake linked to weight gainWeightRefuted20%13
Track Artificial Sweeteners.
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.