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    "story_id": "mp-2026-07-23-006",
    "source_story_id": "tmp-story-superagers-not-low-alzheimer-genetic-risk",
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    "headline": "Exceptional Memory Was Not Just an Absence of Alzheimer's Risk",
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    "dek": "SuperAgers and cognitively average peers could not be separated by APOE or current polygenic risk scores.",
    "summary": "SuperAgers and cognitively average peers could not be separated by APOE or current polygenic risk scores.",
    "body_text": "Researchers compared 142 SuperAgers with 89 cognitively average older adults across five North American sites. APOE status, three Alzheimer's polygenic risk scores, and rare protective variants did not explain exceptional late-life memory. The result narrows one hypothesis and redirects attention toward biological, behavioral, and social protective pathways; it does not identify what preserves memory.",
    "why_it_matters": "SuperAgers and cognitively average peers could not be separated by APOE or current polygenic risk scores.",
    "limitations": [
      "APOE status, three Alzheimer's polygenic risk scores, and rare protective variants did not explain exceptional late-life memory.",
      "The result narrows one hypothesis and redirects attention toward biological, behavioral, and social protective pathways; it does not identify what preserves memory."
    ],
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    "first_published_at": "2026-07-23T09:00:00.000-04:00",
    "modified_at": "2026-07-23T09:00:00.000-04:00",
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        "text": "SuperAgers and cognitively average peers could not be separated by APOE or current polygenic risk scores.",
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        "qualification": "APOE status, three Alzheimer's polygenic risk scores, and rare protective variants did not explain exceptional late-life memory."
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    "source_ids": [
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    "tags": [
      "aging",
      "memory",
      "genetics"
    ],
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    "corrections": []
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  "sources": [
    {
      "source_id": "source-2026-07-23-006",
      "title": "University of Chicago via Newswise: SuperAging genetics",
      "publisher": "University of Chicago Medical Center via Newswise",
      "url": "https://www.newswise.com/articles/new-study-superaging-is-not-simply-the-opposite-of-alzheimer-s-disease",
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      "published_at": null,
      "accessed_at": "2026-07-23T08:34:00.000-04:00",
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    "name": "The Machine Press",
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  "cite_this_report": {
    "title": "Exceptional Memory Was Not Just an Absence of Alzheimer's Risk",
    "publisher": "The Machine Press",
    "published_at": "2026-07-23T09:00:00.000-04:00",
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