{
  "abstract": "Objective: User-generated platforms now function as everyday sources of dietary guidance, making their visible content part of the public digital health information environment. This study diagnoses how healthy-eating posts on Xiaohongshu are organized across health goals, food or method pathways, and applicability conditions, and compares these structures across search entries and levels of public interaction. Structural narrowing is treated as a multidimensional pattern rather than as simple concentration around a search topic.\n\nMethods: We manually accessed publicly searchable image-text posts through the Xiaohongshu mobile application between 28 July 2026 at 17:56:43 and 30 July 2026 at 13:25:47. Six search-entry categories each contained four original Chinese keywords, and 25 qualifying posts were sampled per keyword, producing 600 search-occurrence records. Duplicate views within a keyword were excluded during collection. When the same post appeared under more than one keyword, its search occurrences were retained for entry-level comparison but collapsed into one record when the unique-post corpus was formed. After manual review and deduplication, 594 unique core posts remained. Content was coded for health goals, food and method pathways, templated presentation, advice or effect claims, and condition disclosure. Overall structure and interaction patterns were analyzed using unique posts, while entry differences were examined using occurrence records. Two paired coding rounds were used to calculate Cohen’s kappa for the core fields.\n\nResults: The 594 unique core posts were concentrated around weight/body-shape goals and restriction/control pathways, although the range of food objects was not uniformly narrow. Different search entries showed different combinations of structural features. Weight/body-shape entries emphasized weight goals and restriction/control; bodily-indicator and disease-state entries combined state management with control; method entries organized eating around rhythm-based schemes and templates; product entries shifted attention toward productized objects and weaker condition disclosure; and templated entries foregrounded replicable arrangements. Highly interactive posts were more concentrated in weight, control, and templated structures, but not in insufficient condition disclosure. Among posts that made advice or effect claims, some lacked information on target population, dosage, frequency, duration, or risks.\n\nConclusion: On Xiaohongshu, narrowing was expressed less through the disappearance of food diversity than through repeated combinations of goals, methods, presentation formats, and applicability conditions. A keyword’s topical focus alone was not treated as narrowing. The diagnosis required multiple features, such as concentrated goals, compressed methods, object substitution, templating, or weakened condition boundaries, to occur together within an entry. The findings support entry-level monitoring of public digital health information while remaining distinct from clinical safety assessment, patient-level research, and claims about user adoption.",
  "abstract_shown": true,
  "affiliations": [
    "Law School, Qingdao University of Science and Technology",
    "School of Law, Qingdao University"
  ],
  "article_type": "research article",
  "arxiv": null,
  "author_total": 4,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Qingyong Xu"
    },
    {
      "affs": [
        1
      ],
      "name": "Tong Qi"
    },
    {
      "affs": [
        1
      ],
      "name": "Hangyu Zhou"
    },
    {
      "affs": [
        0
      ],
      "name": "Chunchun Sun"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/7vb4eg9kp7vsh.bib",
  "cited_by": 0,
  "doi": "10.3389/fpubh.2026.1977016",
  "fulltext_url": "https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13727490/?tool=EBI",
  "id": "7vb4eg9kp7vsh",
  "issns": [
    "2296-2565"
  ],
  "landing_url": "https://www.frontiersin.org/articles/10.3389/fpubh.2026.1977016/full",
  "language": "eng",
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "heading",
      "Original Research"
    ],
    [
      "openalex",
      "3306|Social Media in Health Education"
    ]
  ],
  "openalex": "W7223000002",
  "pdf_url": "https://www.frontiersin.org/journals/public-health/articles/10.3389/fpubh.2026.1977016/pdf",
  "pmcid": "PMC13727490",
  "pmid": "42978685",
  "published": "2026-10-20",
  "publisher": "Frontiers Media SA",
  "ris": "https://research.draconitic.com/paper/7vb4eg9kp7vsh.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:20:24Z",
      "native_id": "10.3389/fpubh.2026.1977016",
      "source": "crossref",
      "url": "https://www.frontiersin.org/articles/10.3389/fpubh.2026.1977016/full"
    },
    {
      "first_seen": "2026-11-04T15:20:45Z",
      "native_id": "PMC:PMC13727490",
      "source": "europepmc",
      "url": "https://europepmc.org/article/PMC/PMC13727490"
    },
    {
      "first_seen": "2026-11-06T12:23:21Z",
      "native_id": "PMC13727490",
      "source": "pmc",
      "url": "https://doi.org/10.3389/fpubh.2026.1977016"
    }
  ],
  "subjects": [
    {
      "field": "medicine",
      "origin": "issn:2296-2565",
      "subfield": "epidemiology-public-health"
    }
  ],
  "title": "Diagnosing structural narrowing in public digital health information on healthy eating: a stratified search-entry analysis of Xiaohongshu posts",
  "title_text": "Diagnosing structural narrowing in public digital health information on healthy eating: a stratified search-entry analysis of Xiaohongshu posts",
  "type": "peer-reviewed",
  "updated_at": "2026-11-07T12:20:40Z",
  "url": "https://research.draconitic.com/paper/7vb4eg9kp7vsh",
  "venue": "Frontiers in Public Health",
  "versions": []
}