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    "story_id": "mp-2026-07-24-026",
    "source_story_id": "tmp-story-adolescent-substance-use",
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    "headline": "By Sixteen, 38% Reported Trying at Least One Substance",
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    "dek": "The ABCD cohort traces how alcohol, cannabis, nicotine, and combinations emerge from late childhood into the mid-teens.",
    "summary": "The ABCD cohort traces how alcohol, cannabis, nicotine, and combinations emerge from late childhood into the mid-teens.",
    "body_text": "UC San Diego researchers analyzed repeated assessments from 11,880 participants in the national ABCD study. By age 16, 38% reported lifetime use of at least one substance; nearly 15% reported two or more. Boys reported more use before 12, while girls reported higher alcohol, cannabis, and nicotine use beginning around 13. Self-report and an ongoing cohort limit causal conclusions, but the weighted estimates provide a current benchmark for prevention and brain-development research.",
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    "first_published_at": "2026-07-24T09:00:00.000-04:00",
    "modified_at": "2026-07-24T09:28:00.000-04:00",
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    "tags": [
      "adolescents",
      "substance use",
      "ABCD study"
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    {
      "source_id": "source-2026-07-24-015",
      "title": "UC San Diego via Newswise: Adolescent substance-use patterns",
      "publisher": "UC San Diego via Newswise",
      "url": "https://www.newswise.com/articles/adolescent-substance-use-continues-to-rise-through-mid-teens-national-study-finds",
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      "accessed_at": "2026-07-24T09:24:00.000-04:00",
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    "name": "The Machine Press",
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    "title": "By Sixteen, 38% Reported Trying at Least One Substance",
    "publisher": "The Machine Press",
    "published_at": "2026-07-24T09:00:00.000-04:00",
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