Vitamin d levels may influence IVF outcomes, new study suggests
NCT ID NCT02361827
First seen May 27, 2026 · Last updated Jun 23, 2026 · Updated 7 times
Summary
This study followed 688 women undergoing IVF to see if their vitamin D levels were linked to pregnancy success. Researchers measured ongoing pregnancy rates 12 weeks after embryo transfer. The goal is to clarify a controversial topic with a larger, well-designed study.
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This is a summary of
the original study
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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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Contacts and locations
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Locations
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Reproductive Medical Center, First Affiliated Hospital of Zhengzhou University
Zhengzhou, Henan, 450052, China
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
What this could lead to
If clear links are found, this could help doctors advise women on vitamin D before IVF.
What could go wrong
This is an observational study, so it cannot prove cause and effect. Previous studies have had conflicting results.
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.