Vitamin d pills might tweak hormones in healthy young women
NCT ID NCT06610968
First seen Mar 29, 2026 · Last updated Jun 19, 2026 · Updated 13 times
Summary
This pilot study tests whether taking 5,000 IU of vitamin D daily for three weeks changes testosterone and other hormone levels in young, healthy women aged 18 to 35. Twenty participants will be randomly assigned to receive either vitamin D or a placebo pill. The goal is to see if vitamin D supplementation has any short-term effect on the hormone profile.
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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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University of Southern California Health Sciences Campus Center for Health Professions
Los Angeles, California, 90033, United States
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 (cholecalciferol) supplement
What this could lead to
If it works, this could point toward a role for vitamin D in hormone regulation in healthy women.
What could go wrong
This is a very small pilot study with only 20 participants, so results may not be reliable or apply to others. It only looks at short-term effects.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.