Proof Engine Verification (DISPROVED): The human brain does not generate new neurons in adulthood.

Automated fact-verification of the claim: "The human brain does not generate new neurons in adulthood." Verdict: DISPROVED Key Findings 3 of 3 independent peer-reviewed sources directly confirm that the human brain generates new neurons in adulthood — meeting the threshold of ≥ 3 required to disprove the claim. Moreno-Jiménez et al. 2019 (Nature Medicine) identified thousands of immature neurons in the dentate gyrus of neurologically healthy humans up to the 9th decade of life (B1, verified). Kempermann et al. 2018 (Cell Stem Cell, 18 co-authors) concluded there is "no reason to abandon the idea that adult-generated neurons make important functional contributions to neural plasticity and cognition across the human life span" (B2, verified). Llorens-Martín et al. 2021 (Journal of Neuroscience) concluded that "adult neurogenesis is a robust phenomenon that occurs in the human hippocampus" and persists until the 10th decade of life (B3, verified). All three citations were verified by live fetch against the source pages (tier 5 / government domain, nih.gov). Files proof.py — Re-runnable Python verification script proof.md — Structured proof report proof_audit.md — Full verification audit trail proof_narrative.md — Plain-language summary proof.json — Machine-readable structured data Generated by Proof Engine v0.10.0.