Vitamin d registry launches to uncover hidden health trends
NCT ID NCT06481111
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study will follow 1,000 adults who are taking vitamin D supplements for low vitamin D levels. Researchers will collect health data over 10 years to see how vitamin D use relates to conditions like heart disease, diabetes, cancer, and osteoporosis. The goal is to learn more about who is at risk and how to better manage low vitamin D.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Participants
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About 1,000 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Jul 2024
- Expected to finish
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Dec 2034
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
Who is studied
outpatient clinics who will access of the Endocrinology Unit of the IRCCS San Raffaele Hospital for endocrine-metabolic diseases and who are on supplementary treatment with vitamin D until December 2029
- Ages
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18 years and older
- Sex
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Anyone
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Adult men and women (age ≥ 18 years) regardless of fertility status and pregnancy/breastfeeding conditions * Vitamin D supplementation, with any formulation and dosage * Signing of informed consent Exclusion Criteria: * Patients unable to understand and sign informed consent.
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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.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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IRCCS Ospedale San Raffaele
RECRUITINGMilan, 20132, Italy
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