Could vitamin d levels predict COVID-19 severity? new study investigates
NCT ID NCT04394390
First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This completed study looked at whether vitamin D levels in the blood are linked to how severe COVID-19 gets. Researchers measured vitamin D in 1,100 COVID-19 patients in Turkey. The goal was to see if current vitamin D thresholds reflect real clinical risk. This is an observational study, so it can't prove that vitamin D directly affects outcomes, but it may guide future research.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
Active substance
vitamin D
What this could lead to
If a clear link is found, it could point toward vitamin D levels as a factor in COVID-19 severity, potentially influencing future prevention or treatment strategies.
What could go wrong
This is an observational study, not a treatment trial. It cannot prove cause and effect, and results may not apply to other populations or settings.
Disclaimer
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This is a summary of
the original study
.
Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
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Locations
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Bursa City Hospital
Bursa, Dogankoy, Turkey (Türkiye)