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    "pmc": null,
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    "type": "Meta-analysis",
    "evidence": 5,
    "topics": [
      "fermented-foods"
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  {
    "pmid": "40312666",
    "doi": "10.1186/s12888-025-06871-8",
    "pmc": "PMC12044767",
    "title": "Gut microbiota variations in depression and anxiety: a systematic review",
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    "type": "Systematic review",
    "evidence": 5,
    "topics": [
      "gut-brain-axis"
    ]
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  {
    "pmid": "39662839",
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    "pmc": null,
    "title": "The complex relationship between gut microbiota and Alzheimer's disease: A systematic review",
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    "type": "Systematic review",
    "evidence": 5,
    "topics": [
      "gut-brain-axis"
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  },
  {
    "pmid": "39731509",
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    "year": 2025,
    "type": "Meta-analysis",
    "evidence": 5,
    "topics": [
      "probiotics-mood"
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  {
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    "title": "The impact of dietary fiber consumption on human health: An umbrella review of evidence from 17,155,277 individuals",
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    "type": "Systematic review",
    "evidence": 5,
    "topics": [
      "fibre-health"
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  },
  {
    "pmid": "40258374",
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    "pmc": null,
    "title": "Efficacy of dietary interventions in irritable bowel syndrome: a systematic review and network meta-analysis",
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    "year": 2025,
    "type": "Meta-analysis",
    "evidence": 5,
    "topics": [
      "ibs-diet"
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  {
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    "year": 2025,
    "type": "Clinical guideline",
    "evidence": 5,
    "topics": [
      "ibs-diet"
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  },
  {
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      "gut-brain-axis"
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  {
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    "year": 2024,
    "type": "Systematic review",
    "evidence": 5,
    "topics": [
      "fibre-intake"
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  {
    "pmid": "38011755",
    "doi": "10.1016/j.clnu.2023.11.005",
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    "title": "Dietary fiber intake and all-cause and cause-specific mortality: An updated systematic review and meta-analysis of prospective cohort studies",
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    "year": 2024,
    "type": "Meta-analysis",
    "evidence": 5,
    "topics": [
      "fibre-health"
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    "pmid": "37881833",
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    "title": "The impact of botanical fermented foods on metabolic syndrome and type 2 diabetes: a systematic review of randomised controlled trials",
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    "type": "Systematic review",
    "evidence": 5,
    "topics": [
      "fermented-foods"
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  },
  {
    "pmid": "38068995",
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    "type": "Systematic review",
    "evidence": 5,
    "topics": [
      "gut-brain-axis"
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  {
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    "pmc": null,
    "title": "Systematic review: Autism spectrum disorder and the gut microbiota",
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    "year": 2023,
    "type": "Systematic review",
    "evidence": 5,
    "topics": [
      "gut-brain-axis"
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  },
  {
    "pmid": "37386630",
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    "pmc": "PMC10308754",
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    "year": 2023,
    "type": "Meta-analysis",
    "evidence": 5,
    "topics": [
      "probiotics-mood"
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  },
  {
    "pmid": "37138047",
    "doi": "10.1038/s41579-023-00888-0",
    "pmc": "PMC13306846",
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    "type": "Meta-analysis",
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    "topics": [
      "microbiome-diversity"
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  {
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    "pmc": "PMC9101152",
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  {
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    "title": "The gut microbiota-brain axis, psychobiotics and its influence on brain and behaviour: A systematic review",
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      "gut-brain-axis"
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