Comparison of Dietary Sugar Reduction Methods

This is a two arm, randomized, 4 week study comparing 2 methods of dietary sugar reduction at Emory University and Children's Healthcare of Atlanta. Participants will be non-diabetic children with NAFLD. Two groups of 6 participants will be followed for 4 weeks during the randomized controlled trial followed by a 20 week follow-up extension. One group will receive a guided grocery shopping (GGS) intervention for 4 weeks while the other group will be provided with a low free sugars (<3% total daily) diet.

The goal of this study is to determine if guided grocery shopping (GGS) over 4 weeks is equivalent to complete family diet provision in reducing free sugar intake to <3% of total energy (TE) and if GGS will sustain the dietary change over 6 months.

Study Overview

• Status: Completed
• Conditions: Nonalcoholic Fatty Liver Disease
• Intervention / Treatment: Behavioral: Guided Grocery Shopping (GGS); Other: Diet Provision Group

Detailed Description

Nonalcoholic fatty liver disease (NAFLD) is a condition in which abnormal amounts of fat deposit in the liver. This ectopic deposition of triglycerides is metabolically harmful to the liver and is strongly associated with dysregulation of lipid metabolism and insulin resistance. NAFLD is increasing in prevalence in children and now is estimated to affect ~30% of obese children in the U.S. and 6-15% of children across the world. The severity of the disease ranges widely, from mild with increased fat (steatosis) alone to more severe phenotypes of steatosis, inflammation and hepatocyte ballooning (called steatohepatitis) to cirrhosis. While the natural course of pediatric NAFLD is not fully understood, in adults, progression to cirrhosis occurs in about 10%. Diabetes is strongly associated with NAFLD and in children the incidence of prediabetes and diabetes in children with NAFLD is 3 to 5% per year, markedly increases from population estimates of 3.5/cases per 100,000.

Because of the high prevalence of NAFLD, especially among children with obesity, and the increased mortality and morbidity associated with NAFLD, it has become a focus for therapeutic development. In children, there have been several phase 2 clinical trials, but to date there no approved medications for NAFLD. The current standard of care for pediatric NAFLD treatment is healthy diet and exercise. Which "healthy diet" to apply is unknown. Short term evidence in adults supports a variety of approaches including Mediterranean diet, low-fat diet, and low-carbohydrate diet.

For children, there has been a focus on diet quality rather than weight loss. In totality, research demonstrates that consumption of free sugars leads to increased triglycerides, decreased high density lipoprotein cholesterol (HDLc) and increased very low density lipoprotein (VLDL) size, as well as endotoxemia, while reduction of free sugars improves hepatic fat and inflammation.

Complete diet provision is established as an effective research tool to test a diet modification. However, this approach becomes impractical, unsustainable, and expensive when applied across a large multicenter trial. Consequently, less intensive methods would be highly beneficial, if they are equally effective in modifying the diet. Thus, this randomized equivalence pilot study has been designed to test if facilitated grocery shopping will be equivalent to complete diet provision in reducing free sugar consumption to ≤ 3% in children with NAFLD.

This is a 4-week randomized, controlled, outpatient feeding study at Emory University and Children's Healthcare of Atlanta. Participants will be non-diabetic children with NAFLD. Two groups of 6 participants will be followed for 24 weeks. This will include 4 weeks during which the randomized controlled trial will be conducted, followed by a 20 week follow-up. One group will receive the guided grocery shopping (GGS) intervention for 4 weeks while the other group will be provided with a low free sugars (goal of <3% total daily calories) version of their family's habitual diets. Both groups will receive diet/nutrition counseling and support once per week during the intervention period.

• Study Type: Interventional
• Enrollment (Actual): 8
• Phase: Not Applicable

Contacts and Locations

Study Locations

• United States
  • Georgia
    • Atlanta, Georgia, United States, 30322
      • Emory University
    • Atlanta, Georgia, United States, 30322
      • Children's Healthcare of Altanta

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 8 years to 16 years (Child)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• Clinical history consistent with NAFLD
• Written informed consent from parent or legal guardian
• Written or verbal informed assent from the child
• Currently regularly consumes sugary beverages ( ≥ 2 eight ounce sugar drinks or juice per week)

Exclusion Criteria:

• Participants with a history of health issues that make it unsafe for them to participate in the opinion of the investigators
• History of significant depression
• Diabetes
• Evidence of other chronic liver disease
• Children who are currently enrolled in a clinical trial or who received an investigational study drug or dietary intervention within the past 60 days
• Participants who are not able or willing to comply with the diet protocol or have any other condition that would impede compliance or hinder completion of the study, in the opinion of the investigator
• Families with > 6 individuals

Study Plan

How is the study designed?

Design Details

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

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Guided Grocery Shopping; Participants in this study arm will receive a guided grocery shopping intervention for four weeks.	Behavioral: Guided Grocery Shopping (GGS); The GGS group will be scheduled for 4 weekly sessions to co-shop with the study Registered Dietitian (RD) or clinical research coordinator (CRC). The primary shopper for the household will be required to attend all 4 sessions. The study participant will be required to attend at least 1 session and other family/household members will be encouraged to attend. The weekly sessions will take place at the family's primary grocery store. During each session, the RD will facilitate selection of low free sugar foods and guide the primary shopper on menu planning for a low free sugar diet. In the 4th session, the primary shopper will be asked to shop independently while being observed by the RD/CRC. Prior to checking out, the RD/CRC will approve and/or correct their shopping choices. During the follow-up period, all participants will receive diet counseling/support calls from the dietitian and/or research team at Months 2, 4, and 6, following intervention completion.
Experimental: Diet Provision Group; Participants in this study arm will be provided with a diet low in free sugars. This intervention replaces the habitual diet with a low "free sugars" diet (goal of <3% of total calories).	Other: Diet Provision Group; This intervention will be applied to each family and will target foods and beverages that contain free sugars added to food by consumer, cook, or manufacturer, but preserve the family's other food group choices. During the 4 week long intervention, families will be able to choose meals from a list of foods similar to their usual diet. Groceries for each week will be delivered to the family. Each child will be provided with a lunch bag and instructed to bring lunch to school to maintain the study diet. Families will have the opportunity to choose from a list of pre-prepared evening meals that are similar to what they consumed before study initiation but without free sugars. The families will be instructed to not eat any food outside of the assigned diet. During the follow-up period, all participants will receive diet counseling/support calls from the dietitian and/or research team at Months 2, 4, and 6, following intervention completion.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Change in Percent of Calories from Free Sugars	The percent of calories from free sugars in the GGS group will be compared to the diet provision group. Participants will complete a dietary recall covering three 24-hour periods.	Baseline, Week 4, Week 24

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Diet compliance	Perception of diet compliance difficulty will be assessed qualitatively. Semi-structured interviews will be performed with the participant and their parent/guardian at the end of the study to ascertain their experience during the intervention	Week 4, Week 24
Ability to Sustain Diet	Perception of the ability to sustain the diet will be assessed qualitatively. Semi-structured interviews will be performed with the participant and their parent/guardian at the end of the study to assess their ability to achieve and maintain a low sugar diet.	Week 4, Week 24

Collaborators and Investigators

• Sponsor: Emory University
• Collaborators: Center for Cystic Fibrosis and Airways Disease Research

Study record dates

Study Major Dates

• Study Start (Actual): February 6, 2020
• Primary Completion (Actual): December 15, 2021
• Study Completion (Actual): December 15, 2021

Study Registration Dates

• First Submitted: December 3, 2019
• First Submitted That Met QC Criteria: December 3, 2019
• First Posted (Actual): December 5, 2019

Study Record Updates

• Last Update Posted (Actual): March 25, 2022
• Last Update Submitted That Met QC Criteria: March 23, 2022
• Last Verified: March 1, 2022

More Information

Terms related to this study

• Keywords: Obesity; Pediatrics; Liver Disease
• Additional Relevant MeSH Terms: Digestive System Diseases; Liver Diseases; Fatty Liver; Non-alcoholic Fatty Liver Disease
• Other Study ID Numbers: IRB00115167

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