Vitamin d pills might tweak hormones in healthy young women
NCT ID NCT06610968
First seen Jun 27, 2026 · Last updated Jun 27, 2026
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.
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.
This is an AI summary of the original study and may miss details. Read our disclaimer.
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As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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University of Southern California Health Sciences Campus Center for Health Professions
Los Angeles, California, 90033, United States