Working... Menu

Study of Metabolic Syndrome Use Omega-3 Fatty Acids and Low Fat Meal

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT01768169
Recruitment Status : Unknown
Verified December 2012 by Taipei Medical University Hospital.
Recruitment status was:  Recruiting
First Posted : January 15, 2013
Last Update Posted : January 15, 2013
Information provided by (Responsible Party):
Taipei Medical University Hospital

Brief Summary:
Increased understanding of the impact of long chain omega-3 PUFAs in combination with a low fat plant-based diet will contribute to decelerating further escalation of the "epidemics" of obesity, the (pre)metabolic syndrome, and T2DM in Taiwan.

Condition or disease Intervention/treatment
Metabolic Syndrome Dietary Supplement: fish oil capsule

Detailed Description:

The metabolic syndrome is a common condition in which different degrees of hypertension, impaired glucose tolerance, atherogenic dyslipidemia, and central fat accumulation, as well as prothrombotic and proinflammatory states cluster together in the same individual. The modified National Cholesterol Education Program, Adult Treatment Panel III guidelines defined the metabolic syndrome subjects as individuals with 3 or more following criterion:

  1. Waist circumference: in male ≥90 cm and female ≥80 cm
  2. Raised triglycerides: > 150 mg/dL
  3. Reduced HDL cholesterol: <40 mg/dL in males, <50 mg/dL in females
  4. Raised blood pressure: systolic blood pressure >130 or diastolic blood pressure >85 mmHg
  5. Raised fasting plasma glucose: (FPG)>100 mg/dL

Changes in macronutrient composition have been used to promote weight loss and enhance insulin sensitivity, independent of an emphasis on overall calorie ingestion. Protective effects of fish intake on the development of insulin resistance has been reported in prospective epidemiological studies. Further, long chain omega-3 PUFAs supplementation may improve insulin sensitivity in patients with impaired glucose tolerance and in patients with T2DM.

However, this has not been clearly demonstrated in an intervention trial in Taiwan. Furthermore, the effect of supplementation of long chain omega-3 PUFAs on metabolic risk factors and insulin resistance, except for demonstrated benefit in terms of decreased triglycerides, needs further investigation among Asians.

This 13-week, randomized controlled study will assign approximately 200 subjects meeting criteria for the Metabolic Syndrome (50 each) to the following four arms 1) Standard Taiwan Diet plan; 2) Herbalife meal replacement diet program (Low fat diet); 3) Standard Taiwan Diet plan plus healthy oil supplement (Herbalifeline®) and 4) Herbalife meal replacement plan (Low fat diet) plus healthy oil supplement (Herbalifeline®). All participants will meet with a registered dietitian to assist them with their diet efforts.

In this study, we aim to study the effects of low fat diet with reduced omega-6 PUFAs alone and the same low fat diet with omega-3 fatty acids supplementation on cardiometabolic profile and circulating fatty acid profiles in subjects with the metabolic syndrome.

Layout table for study information
Study Type : Observational
Estimated Enrollment : 200 participants
Observational Model: Cohort
Time Perspective: Prospective
Official Title: Phase 2 Study of Metabolic Syndrome Use Omega-3 Fatty Acids and Low Fat Meal Replacements
Study Start Date : April 2012
Estimated Primary Completion Date : March 2013
Estimated Study Completion Date : July 2013

Resource links provided by the National Library of Medicine

Group/Cohort Intervention/treatment
fish oil capsule
10 capsules per day will provide 2130 mg of EPA (1280 mg) and DHA (850 mg)
Dietary Supplement: fish oil capsule
500 mg of natural fish oil, made up of 30% omega-3 PUFA (EPA:DHA = 3:2)

Primary Outcome Measures :
  1. Metabolic syndrome index [ Time Frame: Day 1 and up to 12 weeks ]
    1. Waist circumference in male ≥90 cm and female ≥80 cm
    2. Raised triglycerides: > 150 mg/dL
    3. Reduced HDL cholesterol: <40 mg/dL in males, <50 mg/dL in females
    4. Raised blood pressure: systolic blood pressure >130 or diastolic blood pressure >85 mmHg
    5. Raised fasting plasma glucose: (FPG)>100 mg/dL

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

Layout table for eligibility information
Ages Eligible for Study:   20 Years to 65 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Probability Sample
Study Population
community sample, residents of Taiwan

Inclusion Criteria:

  • Age 30 to 65 years
  • Female subjects must have a negative pregnancy test at screening, must be surgically sterile or at least 6 months postmenopausal or must use a form of birth control measure.
  • BMI of 24 to 40 kg/m2 inclusive.
  • Subjects must be in good health other than having metabolic syndrome as determined by medical history, physical examination, and screening clinical laboratory including chemistry panel and CBC.
  • Must have stable smoking habits (or be now-smokers) for at least 6 months prior to screening and agree not to intend to change such habits during the course of the study.
  • Subjects requiring the regular use of any prescription medication may be admitted to the study providing the dose is stable.
  • Ethical subjects only will be admitted who are likely to comply with all visits and instructions. This will be determined in the screening phase.
  • Body weight must be stable within 2% of change in the last 3 months.
  • Subject must sign the Institutional Review Board-approved written informed consent prior to the initiation of any study specific procedures or randomization. A subject will be excluded for any condition that might compromise the ability to give truly informed consent for participation in the study.

Exclusion Criteria:

  • Diabetes
  • nown or documented coronary heart disease (CHD) (including ECG consistent with prior myocardial infraction), cerebrovascular accident (including transient ischemic attack), peripheral vascular disease (including symptoms of claudication)
  • Angina or other chest pain that may indicate CHD
  • Clinically significant neoplastic, cardiovascular, hepatic, renal, metabolic, endocrine (untreated or unstable), or psychiatric (untreated or unstable)
  • Known abnormal liver function tests greater than 3X upper limit of normal
  • Smoker, illicit drug use, or excessive alcohol use
  • Medications: Lipid lowering therapy, daily NSAID or greater than 325 mg ASA (PRN use ok), clopidogrel (or equivalent), Coumadin, omega-3 fatty acid supplement, other investigational drugs within 30 days of study entry, high omega-3 fatty acid content in diet within past three months
  • Pregnancy or planning pregnancy during the study period
  • Sensitivity or allergy to fish
  • Subjects who had undergone bypass procedure.
  • Any debilitating disease such as tuberculosis, HIV etc.
  • Unwillingness to give written informed consent for participation in the study.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT01768169

Layout table for location information
Taipei Mecical University Hospital Recruiting
Taipei, Taiwan, 100
Contact: Wen-Yi Cheng    886223711458   
Principal Investigator: Shih-Yi Huang, Ph.D.         
Sub-Investigator: Hsiu-Yue Su, MSc         
Sub-Investigator: Chien-Tien Su, Ph.D         
Sponsors and Collaborators
Taipei Medical University Hospital
Layout table for investigator information
Principal Investigator: Shih-Yi Huang, Ph.D Taipei Medical University

Publications automatically indexed to this study by Identifier (NCT Number):
Layout table for additonal information
Responsible Party: Taipei Medical University Hospital Identifier: NCT01768169     History of Changes
Other Study ID Numbers: omega-3 fatty acids
First Posted: January 15, 2013    Key Record Dates
Last Update Posted: January 15, 2013
Last Verified: December 2012

Keywords provided by Taipei Medical University Hospital:
metabolic syndrome,
waist, blood pressure,
fasting plasma glucose,
HDL cholesterol,

Additional relevant MeSH terms:
Layout table for MeSH terms
Metabolic Syndrome
Pathologic Processes
Insulin Resistance
Glucose Metabolism Disorders
Metabolic Diseases