The Effect of a Healthy Diet Containing Flaxseed and Olive Oil on Cardiovascular Disease Risk Markers

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

50 participants

Study Classification

INTERVENTIONAL

Study Start Date

2021-03-01

Study Completion Date

2022-03-03

Brief Summary

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Flaxseed and olive oil consumption have beneficial effects on cardiovascular risk factors. Nonetheless the effects of their simultaneous consumption have not yet been studied.The purpose of this study is to investigate the effects of a healthy diet containing flaxseed and olive oil compared with healthy dietary advice on cardiovascular disease risk markers in patients with coronary artery disease (CAD), in improving flow-mediated dilation, plasma lipid profile and fatty acids composition of red blood cells.

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Detailed Description

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A randomized controlled clinical trial will be conducted in Rajaie Cardiovascular Center in Tehran, Iran. After review of the inclusion and exclusion criteria and explanation of the design of the study, written consent form will be completed. The participants are 50 eligible coronary artery disease patients, aged 30-75 years. Intervention group will be received a heart-healthy diet with a specified number of food servings from different food groups (including vegetables, fruits, grains, dairy products, meats) + daily consumption of 30 grams of flaxseed + 25 mL/day of refined olive oil (equivalent to 4 tablespoons; 2 tablespoons for lunch and 2 tablespoons for dinner); and control group will be received recommendations for a heart-healthy diet, such as those of the American Heart Association for 3 months. These include eating at least 5 servings of vegetables and fruits daily, reduction in the consumption of sources of saturated and trans fats by avoiding the consumption of high-fat red meats and replacing them with low-fat meat or with poultry and fish, replacing low-fat dairy sources with regular or high-fat ones; consumption of regular vegetable oils such as canola and sunflower; reduction in salt consumption; and reduction in the consumption of simple sugars, for 3 months. Flow mediated dilatation (FMD) in brachial artery via ultrasonography, plasma levels of lipids and lipoproteins via enzymatic method, and fatty acids composition of red blood cells via gas chromatography method were measured.

Conditions

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Coronary Artery Disease

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

SUPPORTIVE_CARE

Blinding Strategy

NONE

Study Groups

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A heart-healthy diet + Flaxseed + Olive oil

A heart-healthy diet with a specified number of food servings from different food groups (including vegetables, fruits, grains, dairy products, meats) + daily consumption of 30 grams of flaxseed + 25 mL/day of refined olive oil (equivalent to 4 tablespoons; 2 tablespoons for lunch and 2 tablespoons for dinner) for 3 months

Group Type ACTIVE_COMPARATOR

Dietary Intervention

Intervention Type OTHER

A heart-healthy diet + daily consumption of 30 grams of flaxseed + 25 mL/day of refined olive oil in adjunct to medical treatment for 3 months

A heart-healthy diet

Recommendations for a heart-healthy diet, such as those of the American Heart Association for 3 months. These include eating at least 5 servings of vegetables and fruits daily, reduction in the consumption of sources of saturated and trans fats by avoiding the consumption of high-fat red meats and replacing them with low-fat meat or with poultry and fish, replacing low-fat dairy sources with regular or high-fat ones; consumption of regular vegetable oils such as canola and sunflower; reduction in salt consumption; and reduction in the consumption of simple sugars for 3 months

Group Type PLACEBO_COMPARATOR

Dietary Intervention

Intervention Type OTHER

A heart-healthy diet + daily consumption of 30 grams of flaxseed + 25 mL/day of refined olive oil in adjunct to medical treatment for 3 months

Interventions

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Dietary Intervention

A heart-healthy diet + daily consumption of 30 grams of flaxseed + 25 mL/day of refined olive oil in adjunct to medical treatment for 3 months

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

1. Established coronary artery disease as verified by coronary angiography
2. Body ass index \<30 kg/m2
3. men and postmenopausal women
4. Willing to participate in the study

Exclusion Criteria

1. Unwilling to follow the protocol and/or give informed consent
2. Chronic Kidney Disease stage 4 or 5 or a reported history cancer
3. Regular consumption of flaxseed or omega-3 supplements during previous month
4. Any changes in the disease treatment plan including type or dose of lipid-lowering medications or coronary artery bypass graft during the study period

Minimum Eligible Age

30 Years

Maximum Eligible Age

75 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No