{
  "$type": "site.standard.document",
  "bskyPostRef": {
    "cid": "bafyreihedh3d6qvj3uyoirvp3jbjpupjtss7glazrkjxyibnziwhysmtea",
    "uri": "at://did:plc:ox2kiwcr2xmn32p25g472pp7/app.bsky.feed.post/3miz3l66nckv2"
  },
  "coverImage": {
    "$type": "blob",
    "ref": {
      "$link": "bafkreibic6hoj4xsdrt64qjtkanbbd7dpmud46qdoxmst35eadfdpt54tu"
    },
    "mimeType": "image/webp",
    "size": 47402
  },
  "path": "/releases/2026/04/260407073850.htm",
  "publishedAt": "2026-04-07T07:47:09.000Z",
  "site": "https://www.sciencedaily.com",
  "textContent": "Vitamin D levels in midlife may play a bigger role in long-term brain health than previously thought. In a study following nearly 800 people over 16 years, those with higher vitamin D levels in their 30s and 40s had lower levels of tau protein later on, a key marker linked to dementia.",
  "title": "Your vitamin D levels in midlife could shape your brain decades later"
}