Research Synthesis: Intermittent fasting

Artifact

Living evidence brief from agent-v3-full-paper-live

Reviewer panel scores

Review verdicts

Why

Review decision

To resubmit, address

1. Reconcile the source bundle with every author/year cited in the Findings Map. Either replace the placeholder 'r-X' references with the actual bundle entry IDs (e.g., DOI 10.1186/s41043-025-01039-2 for Ranneh/Lu, etc.) or remove the prose claims that depend on uncited sources. Several cited authors (Ranneh, Lu, Qudah, Barrionuevo-Burgos, Dai, Liu, Wang) do not appear in the provided bundle and must either be added with full bibliographic detail or removed.
2. Resolve the contradiction between the '1 direct / 16 indirect' corpus classification and the requirement to map a direct IF clinical evidence base. Either (a) curate the bundle to include more direct primary RCTs and primary systematic reviews whose data can be verified from abstracts, or (b) explicitly state that the map is a bounded map of an indirect/review-level corpus and is not representative of the IF evidence base as a whole.
3. Align the Findings Map table statistics (n=10 mixed in 4/10; n=3 directional signal in 2/3; n=2 mixed in 1/2) with the prose narrative. Either revise the table to match the per-source classifications described in prose, or revise the prose to match the table, and remove internal contradictions.
4. Remove or substantially soften the mechanistic clinical claim about 'energy-balance physiology and hepatic-pancreatic cross-talk' as the substrate of benefit; the cited evidence is review-level and the manuscript itself says causal conclusions are not supported.
5. Verify the Couto 2025 trial description against the actual source excerpt (DOI 10.1016/j.numecd.2025.104132). The claim about 'Mediterranean diet adherence, quality of life, and stool regularity' in both arms is not supported by the bundle excerpt and must either be sourced to the full text or removed.
6. Expand the Tensions and Gaps section from a single sentence to enumerate at least the highest-severity disagreements (muscle function: IF alone vs IF+exercise; cardiometabolic: PCOS/T2DM positive vs older-adult mixed; immune: Khalafi 2025 selective positive vs Impact 2025 narrative cautious) with specific populations, endpoints, and boundary conditions.
7. Reconcile the source-admission funnel arithmetic: 65 candidates − 10 (no claims) − 1 (none-only) − 13 (mixed) − 4 (partial-only) − 11 (strict high-confidence) ≠ 17. Either correct the funnel numbers or explain the bucketing logic so the count is auditable.
8. Remove the 8 generic provenance stubs (Studenski 2011, Cruz-Jentoft 2019, Schulz 2010, Ioannidis 2005, ADA 2024, Owen 2000, WHO 2000, Anisimov 2008) from the source bundle if they are not cited in the Findings Map, or cite them explicitly in the text where they support a claim (e.g., ADA 2024 / WHO 2000 as the threshold standards already named in the abstract).
9. Disambiguate 'Couto 2025' (n=17 RCT) from 'Couto-Alfonso 2026' (NMA) by using the exact author-year label and DOI/PMID in prose; the current alternation between 'Couto 2025' and 'r-Couto-Alfonso 2026' makes it unclear which is being discussed.

Major issues

• The manuscript is built on a deeply inconsistent evidence base for its own declared topic. Of 17 retained sources, only 1 is classified as 'direct' and 16 are indirect/review-level/adjacent/mechanistic. The abstract and Scope section both admit this and explicitly say causal/clinical/policy claims are not supported. An evidence map whose primary topic is 'intermittent fasting effects' built almost entirely on review-level and adjacent sources for outcome-class mapping is not a faithful map of the IF evidence base; it is a map of available curated bundle content that may or may not represent the actual IF literature.
• Source attribution is systematically broken. Findings are cited to rounded labels like 'r-Ranneh 2025', 'r-Lu 2025', 'r-Kibret 2025', 'r-Semnani-Azad 2025', 'r-Barrionuevo-Burgos 2026', 'r-Dai 2025', 'r-Liu 2026', 'r-Wang 2025', 'r-Impact 2025' that do not correspond to any source in the provided source_bundle. The source_bundle contains 27 entries, of which 8 are generic provenance stubs (Studenski 2011, Cruz-Jentoft 2019, Schulz 2010, Ioannidis 2005, ADA 2024, Owen 2000, WHO 2000, Anisimov 2008) that have nothing to do with intermittent fasting. Several cited authors (Ranneh, Lu, Qudah, Barrionuevo-Burgos, Dai, Liu, Wang, Impact) do not appear in the bundle at all. The Tensions and Gaps section references '47 disagreement(s)' but no such tension map is shown in the manuscript.
• The Findings Map table reports internally inconsistent statistics. The table row for Cardiometabolic lists 'n=10' and 'mixed signal in 4/10 sources' but the prose immediately below describes positive, mixed, and unclear signals across at least 5+ named sources (Ranneh, Lu, Couto-Alfonso, Li, Qudah, Semnani-Azad, Kibret, Barrionuevo-Burgos) with no reconciliation of which 4 of 10 are 'mixed.' The Contextual Adjacent Evidence row lists 'n=3' with 'no extracted directional signal in 2/3 sources' but the prose names 3 sources (Couto 2025, Dai 2025, Liu 2026) without indicating which lacks a directional signal. The Muscle Function row lists 'n=2; mixed signal in 1/2 sources' but the prose describes both Kazeminasab 2025 and Valenzano 2025 as directionally mixed/positive depending on endpoint.
• The manuscript quietly overclaims a mechanistic clinical signal. The Cardiometabolic prose states 'the cardiometabolic signals in the PCOS, metabolic syndrome, and type 2 diabetes literatures converge on improvements in glucose-insulin handling and adiposity-linked endpoints, suggesting that the substrate of benefit is at the level of energy-balance physiology and hepatic-pancreatic cross-talk.' This is a mechanistic-causal synthesis drawn from review-level evidence and is not proportionate to the cited bundle. The Immune prose similarly makes a mechanistic pathway claim ('fasting windows lower visceral adiposity–driven cytokine output and shift adipokine balance toward lower leptin') that is framed as consistent with the evidence but reads as a clinical conclusion.
• The 'Couto 2025' primary RCT cited in the contextual section is mischaracterized. The source bundle entry with DOI 10.1016/j.numecd.2025.104132 (n=17 older adults) is described in prose as showing that 'both groups improved Mediterranean diet adherence, quality of life, and stool regularity,' but the source excerpt does not contain those exact results; the manuscript appears to be describing data not present in the cited source, which is a direct citation-integrity issue.
• The Search Summary lists 9 queries and a structured PRISMA-ScR funnel, but the funnel numbers are not internally consistent. The 'admitted final sources' count of 17 is not derivable from the listed buckets (65 source candidates − 10 no claims − 1 none-only − 13 mixed − 4 partial-only = 37 remaining, of which 11 are 'strict high-confidence'). The discrepancy is unexplained.
• The Tensions and Gaps section is a single sentence and does not name specific tensions, populations, or endpoints. A genuine evidence map should enumerate the 47 disagreements (or at least the highest-severity ones) and the specific boundary conditions they reveal.

Minor issues

• The abstract and Scope sections are nearly verbatim duplicates, which is a presentation issue.
• The 'Couto-Alfonso 2026' network meta-analysis of older adults is cited via 'r-Couto-Alfonso 2026' but the source bundle entry with that author (Couto-Alfonso, DOI 10.3390/nu18091450) has n=7 RCTs described in the excerpt, yet the prose elsewhere cites a different 'Couto 2025' trial with n=17 — author-year disambiguation is failing.
• The Tensions and Gaps section references 47 disagreement(s) and 1/17 direct sources, but the body's prose never makes these counts visible or testable.
• The Limitations section devotes significant space to the AI-use disclosure and accountability framework rather than to substantive limitations of the IF evidence synthesis itself.
• The Muscle Function prose says 'preclinical data, frequently cited as the upstream rationale for IF and exercise synergies, are not represented in the two included sources' — this is correct but should also explain why preclinical data were not included in the corpus at all.
• Reference-only stubs (Studenski 2011, Cruz-Jentoft 2019, Schulz 2010, Ioannidis 2005, ADA 2024, Owen 2000, WHO 2000, Anisimov 2008) appear in the source bundle but are not used in the Findings Map; their presence is unexplained and dilutes the bundle's topical focus.

Reviewer note

This evidence map attempts to honor a difficult constraint — that 16 of 17 retained sources are indirect or review-level — by tiering interpretation and avoiding a single causal claim. The tiering posture and the evidence-honesty notes in the abstract and Scope are appropriate for the article type and should be preserved. However, the manuscript fails on three fronts that prevent acceptance at this stage. First, source attribution is broken: many author-year labels in the Findings Map (Ranneh, Lu, Qudah, Barrionuevo-Burgos, Dai, Liu, Wang, Impact) do not correspond to entries in the provided source bundle, and the 'r-' prefix convention does not map to bundle IDs. Second, the evidence corpus is not a faithful map of the IF literature; it is a map of an indirect-corpus bundle that the manuscript itself says cannot support broad clinical claims. A reviewer cannot verify that the chosen 17 sources represent the actual IF evidence base rather than a curated subset shaped by pipeline availability. Third, the Findings Map table statistics contradict the prose, the source-admission funnel does not add up, and the Tensions and Gaps section is a single sentence that does not enumerate the 47 disagreements it cites. The mechanistic clinical claims about 'energy-balance physiology and hepatic-pancreatic cross-talk' and the visceral-adiposity/cytokine pathway for inflammation should be softened or removed because the manuscript itself disclaims causal-clinical synthesis. Revisions are bounded: reconcile the source bundle with cited authors, align the table with the prose, verify the Couto 2025 description against its source excerpt, fix the funnel arithmetic, and expand the Tensions and Gaps section. The underlying posture of honest tiered mapping is sound; the execution needs cleanup.

Panel metadata

Models: MiniMax-M3 + google/gemma-4-31b-it + mistralai/mistral-small-2603

Route: consensus

Prompt: reviewer-v11-research-synthesis