{"publication_id":"3db23bf9-1a8b-494f-8560-9beecc746fac","screening":{"identified":24,"screened":24,"excluded":0,"included":24,"included_or_retained":24,"flow":["identified","screened","excluded_with_reasons","included"],"wording":"24 candidate receipts retained after source retrieval, deduplication, and topic filtering. This is an evidence-map screening trace, not a PRISMA full-text exclusion audit.","exclusion_reasons":["No PRISMA full-text exclusion-stage filter was applied."]},"limitations":["This is an agent-assisted evidence map, not a PRISMA-complete systematic review or clinical guideline.","It is not PROSPERO-registered and should not be read as medical advice.","Public sidecars expose citation traces and extraction status; empty fields mean not extracted, not assumed absent."],"contradictions":["Positive study-level signals are summarized in the cognitive outcome class; null signals are summarized in the contextual adjacent evidence, longevity, muscle function, and safety and comorbidity outcome classes; negative signals are not the dominant direction in any outcome class; mixed or heterogeneous signals are summarized in the cardiometabolic and immune and inflammation outcome classes. The paper therefore interprets the corpus as a tiered evidence profile rather than as a single pooled effect.","The conclusion is that Sauna bathing should be treated as a bounded geroscience hypothesis: the retained clinical and adjacent evidence profile defines the scope for targeted testing, while mixed and null findings limit any unqualified anti-aging claim.","Several clinically relevant claims are supported only by mechanistic or biomarker-level evidence rather than by event-driven human data. Heat-stress cellular protection (Brunt 2018), endothelial hypoxia–reoxygenation rescue, and exercise-mimetic comparisons (Hussain 2022, where physiological responses differed between 45-min infrared sauna and exercise at P < 0.0005) provide plausibility but cannot be substituted for clinical outcome trials. The cognitive benefit reported by Passive Heat Therapy 2023 (P = 0.03) and the cardiometabolic improvements summarized across reviews (Brunt 2016; Passive Heat Therapy 2019, reporting a roughly 10 mmHg SBP reduction in older adults) have not been bridged to a randomized, adequately powered trial with incident-dementia or major-adverse-cardiovascular-event endpoints. Until such trials exist, the mechanistic-to-clinic gap remains the principal ceiling on any causal or quantitative claim derived from this corpus.","For Sauna bathing, the final interpretation is deliberately tiered: the retained clinical and adjacent evidence profile defines a bounded geroscience rationale, but the corpus does not support treating mechanistic target engagement, intermediate biomarkers, and patient-relevant outcomes as interchangeable evidence. The closing claim should therefore be read as a map of what the retained studies can support, not as a clinical recommendation or a general anti-aging endorsement. Positive signals identify hypotheses and candidate contexts; null, mixed, or adverse signals identify the boundaries that future work must test directly. The evidence hierarchy remains load-bearing here: direct interventional hard-endpoint records carry more interpretive weight than adjacent clinical evidence, and both carry more translational weight than mechanistic or model systems. A stronger future conclusion would require larger direct human samples, prespecified endpoints, longer follow-up, comparable intervention characterization, transparent safety capture, and a consistent direction of effect across clinically proximate outcomes. Until that evidence exists, the paper's conclusion is that the topic is worth structured follow-up only within the boundaries defined by the included source set. That boundary is not a weakness in the paper; it is the main claim that keeps the synthesis reusable. Readers should carry forward the evidence classes separately: favorable mechanistic or surrogate findings can motivate experiments, indirect human findings can prioritize populations and endpoints, and direct clinical findings define the current ceiling for applied interpretation. The current corpus may support Sauna bathing as a general health or lifestyle intervention where otherwise indicated, but does not justify marketing it as a standalone geroprotective or anti-aging intervention with proven hard-longevity effects. Any downstream use should preserve that tiered reading rather than compressing the corpus into a simple yes/no verdict for clinical practice or public messaging.","Across 24 curated reference papers, the evidence base for Sauna shows a context-dependent profile. Positive signals appear in cardiometabolic and cognitive outcomes. Negative signals appear in cardiometabolic and immune outcomes. Null findings dominate contextual other and longevity outcomes. The synthesis surfaces cross-study disagreements across outcome classes — see Cross-Domain Synthesis. The Sauna anti-aging case as currently constituted is incomplete: mechanistic plausibility coexists with mixed or sparse human-RCT evidence, and the boundary conditions remain to be established."]}