{"publication_id":"ca403171-b282-4695-8058-9dd6bfe3754b","screening":{"identified":29,"screened":29,"excluded":0,"included":29,"included_or_retained":29,"flow":["identified","screened","excluded_with_reasons","included"],"wording":"29 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":["The conclusion is that nad effects should be treated as a bounded geroscience hypothesis: the retained clinical and mechanistic evidence profile defines the scope for targeted testing, while mixed and null findings limit any unqualified anti-aging claim.","Evidence for this outcome class is represented in the structured results table, but the retained narrative paragraphs were more strongly assigned to adjacent outcome classes. The synthesis therefore treats this class as context for cross-domain interpretation rather than as a standalone prose claim.","The corpus contains a substantial mechanistic-to-clinical translation gap in several domains. Likewise, Xiao 2021 reported cardioprotective effects of NR reducing infarct size in a rat ischemia-reperfusion model, but the corresponding human evidence—Yu 2025—showed no significant benefit in ischemic cardiomyopathy patients. Cognitive and neurodegenerative outcomes are addressed only by the narrative review of Qader 2025 and a biomarker-only study in neuronal extracellular vesicles (Vreones 2022); no placebo-controlled trial in the corpus assessed cognitive function as a primary endpoint. These disconnects mean that mechanistic plausibility, however strong, does not yet translate into clinically confirmed benefit for the most publicly salient anti-aging claims.","For nad effects, the final interpretation is deliberately tiered: the retained clinical and mechanistic 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 is non-supportive for clinical efficacy or general health-intervention claims; it supports only hypothesis generation and structured follow-up within the limits of indirect evidence. 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 29 curated reference papers, the evidence base for Nad Effects shows a context-dependent profile. Positive signals appear in: contextual other, immune inflammation. Negative signals appear in: longevity, contextual other. Null findings dominate: contextual other, cardiometabolic. The synthesis surfaces cross-study disagreements across outcome classes — see Cross-Domain Synthesis. The Nad Effects 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."]}