Mediterranean Diet Treatment for NAFLD

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

45 participants

Study Classification

INTERVENTIONAL

Study Start Date

2018-01-01

Study Completion Date

2020-03-01

Brief Summary

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Treatment for Nonalcoholic Fatty Liver Disease (NAFLD) is through lifestyle modification consisting of caloric restriction and exercise, with an emphasis on weight loss. Unfortunately, the success and longevity of lifestyle changes that focus on weight loss, are poor in children. The dietary recommendation of calorie restriction alone may not be optimal in a pediatric population for multiple reasons including changes in hormonal milieu, growth velocity, and decreased bone mineral density that occur with significant weight loss. Mediterranean Diet (MD) is based on the high intake of extra virgin olive oil, vegetables, fruits, cereals, nuts and legumes; moderate intakes of fish and other meats, dairy products and red wine and low intakes of eggs and sweets. So, it provides a large amount of monounsaturated fatty acids, polyunsaturated fatty acids, vegetable proteins, fibre and antioxidants; and low amounts of sugar, cholesterol and saturated fats. It offers a lot of choice in food selection, and well tolerated, and many people can adhere to it over the long term. The investigators aimed to evaluate the effects of a MD vs. low fat diet on changes in hepatic steatosis, aminotransferases, and anthropometric measurements among obese children with NAFLD

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Detailed Description

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Non-alcoholic fatty liver disease (NAFLD) is a disease caused by abnormal lipid accumulation in the liver without alcohol intake or other organic causes. NAFLD covers a range of liver diseases ranging from simple oil infiltration to non-alcoholic steatohepatitis (NASH), fibrosis and cirrhosis. The most important risk factor in the development of NAFLD is insulin resistance due to obesity. Insulin resistance increases hepatic steatosis and accumulation of hepatic fatty acids by increasing peripheral lipolysis and the entry of fatty acids into the liver. In parallel with the increased prevalence of childhood obesity, the occurrence of NAFLD is increasing among children. The risk that the NAFLD can turn into chronic liver disease increases the importance of the disease even more when children become adults Mediterranean Diet (MD) has gained popularity in scientific literature because it is one of the healthiest diets in the world.This diet is based on the high intake of extra virgin olive oil, vegetables, fruits, cereals, nuts and legumes; moderate intakes of fish and other meats, dairy products and red wine and low intakes of eggs and sweets. So, it provides a large amount of monounsaturated fatty acids, polyunsaturated fatty acids, vegetable proteins, fibre and antioxidants; and low amounts of sugar, cholesterol and saturated fats. MD is characterized as low-carbohydrate (40% of calories) and in contrast to low-fat diets, the MD includes fat as 40% of the diet. It offers a lot of choice in food selection, and well tolerated, and many people can adhere to it over the long term. There are a limited number of studies investigating the effectiveness of the MD in NAFLD treatment in different countries. However, there are no studies in the treatment of children with NAFLD in Turkey. The primary aims to this study is to evaluate the effects of a MD vs. low fat diet on changes in hepatic steatosis, aminotransferases, and anthropometric measurements among obese children with NAFLD in Turkey. The secondary aim to this study is to evaluate the effects of the both diets in insulin resistance.

Conditions

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Mediterranean Diet

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

The study design was a single-blinded randomized, parallel assignment clinical trial of children with NAFLD was conducted. Participants were randomized in a 1:1 fashion to either 12-weeks of a Mediterranean diet or a low fat diet.

Primary Study Purpose

OTHER

Blinding Strategy

SINGLE

Participants

The study design was single blind and the participants did not know what diet they had taken.

Study Groups

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Mediterranean Diet

The MD diet is rich in plant based foods including vegetables, whole cereal and fruit with the main added fat being extra virgin olive oil. In addition, the diet emphasises, while consumption of legumes, nuts and fish is high, consumption of red meat and home-made desserts is low, and consumption of fermented milk and poultry is moderate. The MD diet had a target macronutrient composition of 35-40% fat (with \<10% of energy as saturated fat), 40-44% carbohydrate and 20% protein.

Group Type ACTIVE_COMPARATOR

Mediterranean Diet

Intervention Type BEHAVIORAL

A list of foods high consumption of vegetables, fruits, non-refined cereals, legumes and potatoes, moderate consumption of fish and poultry and low consumption of full fat dairies, red meat and its products and homemade sweets.

Low Fat Diet

The Low Fat diet had a target macronutrient composition of 55% of energy from carbohydrate, 20-25% from fat (with \<10% of energy as saturated fat) and 20-25% from protein. Nutrition education focused on choosing foods containing ≤3 grams of fat/serving, limiting added fats, and using low-fat meal preparation strategies. Parents were instructed to offer their children ample amounts of grains, vegetables, fruits, lean meats, low-fat dairy products and limit high-fat foods

Group Type ACTIVE_COMPARATOR

Low Fat Diet

Intervention Type BEHAVIORAL

These children are forbidden to eat high-fat foods such as fried foods, butter, cream cheese, while foods such as fruits, vegetables (starchy and non-starch), cereals, poultry, lean meat and low-fat dairy products are allowed.

Interventions

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Mediterranean Diet

A list of foods high consumption of vegetables, fruits, non-refined cereals, legumes and potatoes, moderate consumption of fish and poultry and low consumption of full fat dairies, red meat and its products and homemade sweets.

Intervention Type BEHAVIORAL

Low Fat Diet

These children are forbidden to eat high-fat foods such as fried foods, butter, cream cheese, while foods such as fruits, vegetables (starchy and non-starch), cereals, poultry, lean meat and low-fat dairy products are allowed.

Intervention Type BEHAVIORAL

Eligibility Criteria

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Inclusion Criteria

* Diagnosis of NAFLD
* Body mass index z-score \>85th percentile

Exclusion Criteria

* Secondary causes of NAFLD (eg. medication induced)
* Use of weight loss medications
* Diabetes Mellitus
* Other causes of fatty liver disease (eg. Wilson disease, alpha-1 antitrypsin deficiency, auto-immune hepatitis, and viral hepatitis)

Minimum Eligible Age

9 Years

Maximum Eligible Age

17 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No