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Vitamin d levels linked to metabolic health in seniors

NCT ID NCT03344718

Knowledge-focused Sponsor: National Cheng-Kung University Hospital Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study examined the relationship between metabolic syndrome and vitamin D levels in 549 older adults (65+). Researchers collected health questionnaires and blood samples to understand how these factors are connected. The goal was to gather knowledge, not to test a treatment.

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

549 people

The number who actually took part.

Started

Jul 2012

Finished

Aug 2012

Lead sponsor

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

Tianliao District, located in Kaohsiung City in southern Taiwan, is a tropical, agriculture-based community. It is located at around 22N50' latitude, like Hawaii (18° 55' N to 28° 27' N), and about 7° farther south than Florida (24° 27' N to 31° 00' N). The annual average temperature is 25.1°C (range: 19.3-29.2°C), and its annual average sunshine duration is 212.2 hours (longest: 221.4 hours in July; shortest: 161.8 hours in December). In the 2012 census report, the total population of Tianliao District was 7800, and 1966 (25.2%) participants were ≥ 65 years old.

Ages

65 years and older

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show 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: * more than 65-year-old Exclusion Criteria: * excluding empty houses, death, non-ambulatory subjects (subjects with significant disabilities, such as handicapped cerebral vascular accident, cancerous cachexia, unstable chronic diseases or psychiatric disorders, severe arthritis or inflammatory disease), uncomfortable anorexia by any medications, and non-reachable subjects

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Conditions

The condition(s) this trial relates to.

abdominal obesity-metabolic syndrome Insulin Resistance metabolic syndrome X Obesity obesity disorder osteoporosis Sarcopenia vitamin D deficiency

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Elderly Insulin resistance Metabolic syndrome Obesity Osteoporosis Ostreocalcin Sarcopenia Vitamin D deficiency

Contacts and locations

Locations

  • Department of Family Medicine, National Cheng Kung Univ Hosp

    Tainan, Taiwan

More trials for these conditions

Other studies related to the condition(s) this trial covers.