Metabolic Syndrome XNCT00128154
Chromium Picolinate for the Treatment of Metabolic Syndrome
A study testing Chromium picolinate in people with Metabolic Syndrome X and Prediabetic State, run by National Center for Complementary and Integrative Health (NCCIH) at 1 site in United States.
Trial summary
The purpose of this study is to determine whether chromium supplements can reduce symptoms of metabolic syndrome, a collection of symptoms that increase one's risk for developing heart disease, stroke, and diabetes. Read more about this study
- Who is it for?
- Ages 18 to 75 years
- Conditions the study is for
- Metabolic Syndrome X, Prediabetic State, Insulin Resistance
- What is being tested?
- Chromium picolinate
- How many people
- 60 participants
- Where
- 1 siteUnited States
- Study dates
- Jan 2004to Dec 2005
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 75 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Meet at least two of the following criteria for diagnosis of metabolic syndrome: 1) systolic blood pressure higher than 130 mmHg or diastolic blood pressure higher than 85 mmHg in untreated patients OR use of more than one approved antihypertensive agent; 2) fasting glucose higher than 110 mg/dL; 3) fasting triglycerides higher than 150 mg/dL; 4) high density lipoprotein (HDL) less than 40 mg/dL for men and less than 50 mg/dL for women
- Abdominal obesity defined by a waist circumference higher than 40 inches for men and 35 inches for women
Who cannot join
- Type 1 or 2 diabetes mellitus
- Use of antihyperglycemic or insulin sensitizing medication within 3 months prior to study entry
- Uncontrolled hypertension
- Triglycerides higher than 800 mg/dL
- Low density lipoprotein (LDL) cholesterol higher than 190 mg/dL
- History of renal insufficiency
Show all 22Show fewer
- History of liver disease or abnormal liver function tests (higher than 3x upper limit normal)
- History of atherosclerotic cardiovascular disease
- History of congestive heart failure
- Cancer within 5 years prior to study entry. Participants with a history of skin cancer are not excluded.
- Surgery within 30 days prior to study entry
- Use of niacin within 6 weeks prior to study entry
- Use of fibrates within 12 weeks prior to study entry
- History of alcohol or drug abuse
- Participation in an investigational drug study within 6 weeks prior to study entry
- Any major active rheumatologic, pulmonary, or dermatologic disease, or inflammatory condition
- Unstable medical or psychological condition that would interfere with the study
- Use of any chromium-containing dietary supplement within 3 months prior to study entry
- Allergy or sensitivity to chromium, picolinic acid, or chromium picolinate
- Use of beta blockers, corticosteroids, androgens, anticoagulants, and antiarrhythmics within 3 months prior to study entry
- Use of dietary supplements within 30 days prior to study entry. Participants who use multivitamins, calcium, vitamin D, or (non-niacin) B vitamins are not excluded.
- Pregnancy or breastfeeding
Trial locations and contacts
1 site in 1 country.
United States1 site
University of Pennsylvania
Philadelphia, Pennsylvania, 19104
About this study
Official title: A Double-Blind Randomized Controlled Clinical Trial of Chromium Picolinate on Clinical and Biochemical Features of the Metabolic Syndrome
The purpose of this study is to determine whether chromium supplements can reduce symptoms of metabolic syndrome, a collection of symptoms that increase one's risk for developing heart disease, stroke, and diabetes.
Read the detailed description
Metabolic syndrome is a serious condition that may lead to a number of life-threatening diseases. A reduction in the symptoms of metabolic syndrome could result in decreased morbidity and health care costs and increased quality of life.
Chromium is an essential mineral that is used in the breakdown of fats, protein, and carbohydrates. The cholesterol-lowering and blood sugar-stabilizing properties of chromium make the supplement a strong candidate for reducing the symptoms of metabolic syndrome. This study will determine whether chromium supplements can reduce symptoms of metabolic syndrome in abdominally obese individuals.
Participants will be randomly assigned to receive either chromium supplements or placebo daily for 16 weeks. Participants will have study visits at study start and at Months 2 and 4. A follow-up visit will occur 5 months after the end of the intervention period. Blood tests, urine tests, and nail clippings will be used to assess lipoprotein cholesterol, insulin response to glucose, lean body mass, blood pressure, oxidative stress, and chromium levels in participants.
- Being tested
- Chromium picolinate
- Keywords
- Chromium, Chromium picolinate, Blood Glucose, Cholesterol, Complementary Therapies
- Medical subject headings
- Metabolic Syndrome, Prediabetic State, Insulin Resistance, Obesity, Metabolic Diseases
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Chromium picolinateDrug
What is being measured
The primary outcome is the main question the study is designed to answer.
Increase in insulin sensitivity
Secondary outcomes (5)
Glucose effectiveness
acute insulin response to glucose
fasting triglycerides and high density lipoprotein cholesterol
free fatty acids
weight and/or body composition
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted9 Aug 2005 (estimated)
- Study startJan 2004
- Study completionDec 2005
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (1)Papers the sponsor has linked to this study.
- Other trials for Metabolic Syndrome XStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind
- Enrolment
- 60 participants
Sponsor and investigators
- Lead sponsor
- National Center for Complementary and Integrative Health (NCCIH)
- Sponsor type
- US National Institutes of Health
- Investigators
- Nayyar Iqbal, MD, Principal investigator, University of Pennsylvania
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00128154
- Sponsor's protocol ID
- R21 AT001147-01
- Status last verified
- Aug 2006
- First submitted
- 5 Aug 2005
- Last updated
- 18 Aug 2006
- Results posted
- No
Publications
Iqbal N, Cardillo S, Volger S, Bloedon LT, Anderson RA, Boston R, Szapary PO. Chromium picolinate does not improve key features of metabolic syndrome in obese nondiabetic adults. Metab Syndr Relat Disord. 2009 Apr;7(2):143-50. doi: 10.1089/met.2008.0048.
PubMed 19422140
Study at a glance
From the registry record, last updated by the sponsor on 18 Aug 2006. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Double-Blind Randomized Controlled Clinical Trial of Chromium Picolinate on Clinical and Biochemical Features of the Metabolic Syndrome
- ClinicalTrials.gov ID
- NCT00128154
- Acronym / sponsor ID
- R21 AT001147-01
- Keywords
- Chromium, Chromium picolinate, Blood Glucose, Cholesterol, Complementary Therapies
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 60 participants
- Lead sponsor
- National Center for Complementary and Integrative Health (NCCIH)US National Institutes of Health
- Study start
- Jan 2004
- Study completion
- Dec 2005
- First posted
- 9 Aug 2005 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The purpose of this study is to determine whether chromium supplements can reduce symptoms of metabolic syndrome, a collection of symptoms that increase one's risk for developing heart disease, stroke, and diabetes.
Detailed description
Metabolic syndrome is a serious condition that may lead to a number of life-threatening diseases. A reduction in the symptoms of metabolic syndrome could result in decreased morbidity and health care costs and increased quality of life.
Chromium is an essential mineral that is used in the breakdown of fats, protein, and carbohydrates. The cholesterol-lowering and blood sugar-stabilizing properties of chromium make the supplement a strong candidate for reducing the symptoms of metabolic syndrome. This study will determine whether chromium supplements can reduce symptoms of metabolic syndrome in abdominally obese individuals.
Participants will be randomly assigned to receive either chromium supplements or placebo daily for 16 weeks. Participants will have study visits at study start and at Months 2 and 4. A follow-up visit will occur 5 months after the end of the intervention period. Blood tests, urine tests, and nail clippings will be used to assess lipoprotein cholesterol, insulin response to glucose, lean body mass, blood pressure, oxidative stress, and chromium levels in participants.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind
Who may qualify
- Ages
- 18 to 75 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (2 listed)
- Meet at least two of the following criteria for diagnosis of metabolic syndrome: 1) systolic blood pressure higher than 130 mmHg or diastolic blood pressure higher than 85 mmHg in untreated patients OR use of more than one approved antihypertensive agent; 2) fasting glucose higher than 110 mg/dL; 3) fasting triglycerides higher than 150 mg/dL; 4) high density lipoprotein (HDL) less than 40 mg/dL for men and less than 50 mg/dL for women
- Abdominal obesity defined by a waist circumference higher than 40 inches for men and 35 inches for women
Key exclusion criteria (22 listed)
- Type 1 or 2 diabetes mellitus
- Use of antihyperglycemic or insulin sensitizing medication within 3 months prior to study entry
- Uncontrolled hypertension
- Triglycerides higher than 800 mg/dL
- Low density lipoprotein (LDL) cholesterol higher than 190 mg/dL
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Chromium picolinate | Drug | – |
Primary outcome
Increase in insulin sensitivity
5 secondary outcomes
Glucose effectiveness
acute insulin response to glucose
fasting triglycerides and high density lipoprotein cholesterol
free fatty acids
weight and/or body composition
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 18 Aug 2006.
- Derived from this study: PubMed 19422140Iqbal N, Cardillo S, Volger S, Bloedon LT, Anderson RA, Boston R, Szapary PO. Chromium picolinate does not improve key features of metabolic syndrome in obese nondiabetic adults. Metab Syndr Relat Disord. 2009 Apr;7(2):143-50. doi: 10.1089/met.2008.0048.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Nayyar Iqbal, MD principal investigator
University of Pennsylvania
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Chromium picolinate in people with Metabolic Syndrome X and Prediabetic State, run by National Center for Complementary and Integrative Health (NCCIH) at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 2 inclusion and 22 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 18 Aug 2006. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Increase in insulin sensitivity. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT00128154, which also lists 1 linked publication.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 18 Aug 2006; AzTrials last refreshed its copy on 8 Nov 2026.