{
  "@context": "https://schema.org",
  "@graph": [
    {
      "@type": "Organization",
      "@id": "https://protein-fact.com/#organization",
      "name": "Protein Fact",
      "url": "https://protein-fact.com",
      "description": "プロテインに関する科学的事実を、論文・数値・製品スペックに基づいて解説する独立メディア。",
      "publishingPrinciples": "https://protein-fact.com/editorial-policy"
    },
    {
      "@type": "WebSite",
      "@id": "https://protein-fact.com/#website",
      "name": "Protein Fact",
      "url": "https://protein-fact.com",
      "publisher": {
        "@id": "https://protein-fact.com/#organization"
      },
      "inLanguage": "ja"
    },
    {
      "@type": "Article",
      "@id": "https://protein-fact.com/guides/creatine-brain-cognitive-function#article",
      "headline": "クレアチンは筋肉だけでなく脳にも効果があるのか — 認知機能・睡眠不足・加齢に関する最新エビデンス",
      "description": "クレアチンの脳内での役割（ホスホクレアチン-ATP再合成）と認知機能への効果を、メタ分析・RCTの数値データとともに整理。高齢者サブグループではSMD=0.88と大きいが、EFSAは2024年にクレームを却下する。",
      "datePublished": "2026-03-19T00:00:00.000Z",
      "dateModified": "2026-03-19T00:00:00.000Z",
      "keywords": "クレアチン, 認知機能, 脳, 睡眠不足, 高齢者, ATP, サプリメント",
      "publisher": {
        "@id": "https://protein-fact.com/#organization"
      },
      "mainEntityOfPage": {
        "@id": "https://protein-fact.com/guides/creatine-brain-cognitive-function"
      },
      "isPartOf": {
        "@id": "https://protein-fact.com/#website"
      }
    },
    {
      "@type": "BreadcrumbList",
      "@id": "https://protein-fact.com/guides/creatine-brain-cognitive-function#breadcrumb",
      "itemListElement": [
        {
          "@type": "ListItem",
          "position": 1,
          "name": "Protein Fact",
          "item": "https://protein-fact.com"
        },
        {
          "@type": "ListItem",
          "position": 2,
          "name": "ガイド・比較",
          "item": "https://protein-fact.com/guides"
        },
        {
          "@type": "ListItem",
          "position": 3,
          "name": "クレアチンは筋肉だけでなく脳にも効果があるのか — 認知機能・睡眠不足・加齢に関する最新エビデンス"
        }
      ]
    }
  ]
}