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  "path": "/news/2026-03-trial-vitamin-d-supplements-dont.html",
  "publishedAt": "2026-03-12T11:00:25.000Z",
  "site": "https://medicalxpress.com",
  "textContent": "In a large, randomized trial, researchers at Mass General Brigham found that high-dose vitamin D3 did not reduce COVID-19 infection severity, but may impact long COVID outcomes. Results of the study are published in The Journal of Nutrition.",
  "title": "Trial finds vitamin D supplements don't reduce COVID severity but could reduce long COVID risk"
}