The Effects of a Low Glycemic Load Diet on Dysglycemia and Body Composition in Adults With Cystic Fibrosis-Related Diabetes
Rhode Island Hospital
Summary
This study will evalute the effect of a low glycemic load (LGL diet on dysglycemia, insulin requirements, DXA-derived body composition, gastrointestinal symptoms and quality of life measures in adults with cystic fibrosis-related diabetes (CFRD). We will use continuous glucose monitors (CGM) to assess the LGL diet both in a controlled setting (via a meal delivery company) and in free-living conditions.
Description
Maintenance of a healthy body mass index (BMI) is a well-established marker of improved morbidity and mortality in patients with cystic fibrosis (CF). To achieve and maintain adequate weight, patients with CF are encouraged to consume a caloric intake of 120-150% of the dietary reference intake (DRI) for the typical healthy adult. However, dietary recommendations for children and adults with CF are based entirely on consensus and expert opinion. High carbohydrate intake is typical for patients with CF, but this may lead to multiple complications including post-prandial hyperglycemia, increased…
Eligibility
- Age range
- 18–70 years
- Sex
- All
- Healthy volunteers
- No
Inclusion Criteria: * 18 years and above * Genetically confirmed diagnosis of CF * Diagnosis of pancreatic insufficiency, requiring pancreatic enzyme replacement * Criteria for CFRD: A.) Most recent OGTT 2-hour glucose \>200 mg/dL within the past two years, and/or; B.) HbA1c \>6.5% in the past two years, and/or; C.) Current use of insulin Exclusion Criteria: * FEV1 \<50% predicted on most recent pulmonary function testing * BMI \<18 kg/m2 * Currently receiving enteral nutrition support via GT feeds * Pregnancy, plan to become pregnant in the next 3-months, or sexually active without use of…
Interventions
- BehavioralLow Glycemic Load Diet
Food delivery service will provide a low glycemic load diet for 8 weeks, followed by a 4-month period of self-adherence to a low glycemic load diet with close nutritionist follow up
Locations (2)
- Boston Children's HospitalBoston, Massachusetts
- Rhode Island HospitalProvidence, Rhode Island