Clinical trial registry record

Vitamin D and Arterial Stiffness in Elderly

A registered PHASE2 study indexed because it matched monitored longevity research terms. Registry status: Completed. Registration does not establish safety or effectiveness.

Plain-language guide

Five questions to ask about this record

What this is
A clinical study registration, not a result or recommendation.
Why it may matter
The registry currently reports Completed.
Evidence
Registered phase 2 study.
Main limitation
Registration does not prove that the intervention works, is safe, or is available to you.
What changed
Registry metadata was last updated March 21, 2022.
Where to verify
Open the primary registry below for eligibility, locations, contacts, and current status.
Registry ID
NCT03649802
Last registry update
March 21, 2022
Status
Completed
Phase
Phase 2
Sponsor
Texas Tech University Health Sciences Center
Enrollment
52
Countries
United States
Match confidence
100%
Source feed
ClinicalTrials.gov
Automated source synopsis

A registered PHASE2 study indexed because it matched monitored longevity research terms. Registry status: Completed. Registration does not establish safety or effectiveness.

Evidence snapshot

What the source actually supports

Evidence stage
Phase 2
Study design
RANDOMIZED · PARALLEL · TREATMENT · DOUBLE
Evidence population
Human clinical study registration
Participants
52
Population
ALL · 65 Years to 89 Years
Duration
2018-08-16 to 2021-12-31
Intervention
Low dose vitamin D3; High dose vitamin D3
Comparator
Low dose Vitamin D-800 IU; High dose Vitamin D-5000 IU
Outcomes measured
Carotid-femoral pulse wave velocity measured by equipment provided by Complior pulse wave analysis — 1 year; 24 hour BP ambulatory monitoring — 1 year; Heart rate variability — 1 year; Plasma sulphoraphane and F2-isoprostanes. Isoprostanes will be measured by gas chromatography mass spectrometry and sul…
Reported result
No reusable finding-level result is available in this record.

Main limitationThis is a study registration. No reusable structured result is available here, so it cannot show whether the intervention worked or was safe.

Safety and approvalEligibility, adverse-event details, and clinical decisions must be checked in the official registry and with qualified clinicians. Trial registration is not regulatory approval and does not establish that an intervention is available.

Source supportStructured registry protocol metadata; no finding-level conclusion is generated.

Trial stage · Phase 2A trial phase describes development stage; it does not establish a positive result.
Phase 1Phase 2Phase 3Phase 4

Registration and recruitment status do not establish safety, efficacy, or regulatory approval.

Why this record appears here · 100% topic match

The title, summary, or source keywords matched one or more topics followed by immortal.life. A higher percentage means a stronger topic match; it does not rate safety, effectiveness, or study quality.

  • Cardiovascular ageing · 100%Title contains controlled term: arterial stiffness. Abstract contains controlled term: arterial stiffness. Source terminology contains: arterial stiffness. Title supplies longevity context: elderly. Study type is explicitly identified as INTERVENTIONAL.

Automated source check 100% · update recency 50%. These figures help sort records; they are not medical ratings.

cardiovascular aging
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