Intermittent Fasting in Dyslipidemia

February 20, 2019 updated by: NASEER AHMED, Aga Khan University

Role of Intermittent Fasting in Improving High Density Lipoprotein Cholesterol

World Health Organization report notifies of the escalating global burden of cardiovascular diseases (CVD), projecting that it will become the major worldwide cause of death and disability by 2020. The South Asian countries have the highest rates of CVD globally. It is widely acknowledged that South Asians have 40-60% higher risk of CVD linked to mortality, compared with other populations. Multiple human population studies have established the concentration of high density lipoprotein (HDL) cholesterol as an independent, inverse predictor of the risk of having a cardiovascular event. Furthermore, HDLs have several well-documented functions with the potential to protect against cardiovascular disease. This study trial is designed to find out the role of intermittent fasting to improve the dyslipidemia and particularly increase the levels of HDL in general population. Investigators expect that the intermittent fasting will significantly enhance the level of HDL and reduce cardiovascular events in general population.

Study Overview

Detailed Description

INTRODUCTION:

Overall lipid profile is important in cardiovascular diseases but particularly serum HDL levels have long been recognized as an independent inverse prognostic marker of CVD, when the Framigham study, in 1980s showed that HDL below 40-60mg/dl is of prognostic relevance. A rise of 1mg/dl in HDL levels is considered to reduce coronary artery disease (CAD) risk to 2-3%. Even patients with elevated total cholesterol (TC) and LDL, presenting a high HDL are seen to be protected from atherosclerosis. Multiple human population studies have shown the concentration of HDL cholesterol as an independent, inverse predictor of the risk of having a cardiovascular event. Additionally, HDL has several well-documented functions with the potential to protect against cardiovascular diseases. These include an ability to promote the efflux of cholesterol from macrophages in the artery wall, inhibit the oxidative modification of LDL, inhibit vascular inflammation, inhibit thrombosis, promote endothelial repair, promote angiogenesis, anti-oxidant, enhance endothelial function, improve diabetic control, and inhibit hematopoietic stem cell proliferation. HDL also exerts direct cardio protective effect, which are mediated with its interactions with the myocardium.

Various studies have emphasised the high incidence of CVD within the South Asian countries. The increased risk of cardiovascular events in South Asians at a younger age might be due to unknown factors affecting plaque rupture, the interaction between prothrombotic factors and atherosclerosis, or may be due to any undiscovered risk factors. Urbanisation and westernisation is characterised by a distinct increase in the intake of energy dense foods, a decrease in physical activity, and a heightened level of psychosocial stress, all of which promote the development of hyperglycaemia, hypertension, and dyslipidaemia. Most common dyslipidaemia in South Asians is low HDL-C and high triglycerides. High triglyceride and low HDL-C levels are metabolically interlinked. This metabolic phenotype is also associated with increased levels of small LDL particles despite relatively normal levels of LDL-C among South Asians. This clinical syndrome is accompanied by insulin resistance, a condition frequently referred to as atherogenic dyslipidemia, which is a common metabolic derangement among Asian. South Asians not only have lower HDL levels but also have a higher concentration of small, less-protective HDL particles. One proposed mechanism is presence of dysfunctional HDL particles. Another potential explanation for the apparent blunted cardioprotection of HDL in South Asians might be related to HDL particle size. Small particles might be less efficient in reverse cholesterol transport. In general, HDL particle size tends to be lower in patients with CHD and those with low HDL-C levels . Alarmingly, an estimated 60-80% of Pakistani population has been reported to have low HDL. There are a number of non-pharmacological and pharmacological recommendations for management of low HDL. Non-pharmacological (functional food) strategies are reported to increase HDL levels around 10-15% and which include regular exercise , body weight reduction in obese individuals , cessation of cigarette smoking in smokers and dietary modifications like decrease intake of saturated trans-fatty acids with increase intake of omega-3 polyunsaturated fatty acids . There are also a number of pharmacological agents being considered as therapeutic options but the tolerability and safety issues limit their use in addition to limited success in improving HDL. IF may be a dietary method to aid in the improvement of the lipid profile in healthy, obese and dyslipidemia men and women, reducing total cholesterol, LDL, triglycerides and increasing HDL levels. However, the majority of studies that analyze the IF impacts on the lipid profile and body weight loss are observational and lack detailed information about diet. Randomized clinical trials with larger sample size are needed to evaluate the IF effects mainly in population with dyslipidemia.

HYPOTHESIS:

Intermittent fasting is capable of improving dyslipidemia and particularly enhancement of serum, HDL which can increase the cardioprotection in high risk general population.

OBJECTIVES:

To evaluate the effect of intermittent fasting on cholesterol levels specifically on HDL.

DATA STORAGE AND MANAGEMENT:

Every participant will be given a code number, all data will be saved according to the code numbers. Privacy will be maintain of each and every participant. Records will be kept confidential and used only for scientific purposes by authorized personnel. The hard copies will be kept in locked cupboards and soft data will be managed in password protected computers. Data will be stored at institutional level for almost 15 years.

DISSEMINATION OF FINDINGS AND PUBLICATION PLAN:

Investigators expect that Ajwa and intermittent fasting will significantly improve HDL levels in order to enhance the cardiac protection. This research will help in promoting the significance of use of functional food and fasting to improve overall health. Investigators expect at least two publications from this study. The findings of the study will be presented in international conference and will be published in well reputed journal.

Study Type

Interventional

Enrollment (Anticipated)

60

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

    • Sindh
      • Karachi, Sindh, Pakistan, 74800
        • Recruiting
        • Aga Khan University
        • Contact:

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 80 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • General population with serum HDL less than 40 mg/dl for men and women
  • Adult ages 18- 80 years will be included in the study.

Exclusion Criteria:

  • Individuals Patients already observing fasting regularly
  • Pregnant women and individuals with diabetes, metabolic syndrome or any other co-morbidity will be excluded.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Prevention
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
No Intervention: Control
Experimental: Interventional
Will observe intermittent fasting
12-14 hours fasting

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Lipid profile
Time Frame: 6 weeks
Change in HDL more than 3mg/dl Change in LDL more than 3mg/dl Cholesterol and TG
6 weeks
weight loss
Time Frame: 6 weeks
Change in body weight (kg), as measured by scale weight
6 weeks
Blood pressure
Time Frame: 6 weeks
Reduction in systolic and diastolic
6 weeks

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Fasting Glucose
Time Frame: 6 weeks
Fasting glucose mg/dl
6 weeks
Fasting Insulin
Time Frame: 6 weeks
Fasting insulin (IU/L)
6 weeks
Waist circumference Waist circumference (cm)
Time Frame: 6 weeks
WC in cm
6 weeks
Lipid profile HbA1c (%) Lipids
Time Frame: 6 weeks
Total cholesterol (mg/dl), LDL cholesterol (mg/dl), HDL cholesterol (mg/dl), and triglycerides (mg/dl)
6 weeks
Waist circumference
Time Frame: 6 weeks
Waist circumference (cm)
6 weeks

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

February 20, 2019

Primary Completion (Anticipated)

June 1, 2019

Study Completion (Anticipated)

September 15, 2019

Study Registration Dates

First Submitted

January 14, 2019

First Submitted That Met QC Criteria

January 15, 2019

First Posted (Actual)

January 16, 2019

Study Record Updates

Last Update Posted (Actual)

February 21, 2019

Last Update Submitted That Met QC Criteria

February 20, 2019

Last Verified

February 1, 2019

More Information

Terms related to this study

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

No

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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