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Clinical Trial Summary

The goal of this clinical trial is to compare a healthy KETO diet supplemented with canola oil (KETO-Can) compared to a traditional KETO diet high in saturated fat (KETO-Sat) and low-fat diet (LFD) in adults at high risk of or diagnosed with type 2 diabetes. The main question[s] it aims to answer are: - Effects on CVD risk factors (plasma cholesterol, TG, ApoB100, glucose, insulin and HbA1C). - Effects on systemic inflammation and immune function. - Safety and adherence to interventions. Participants will be randomized into 1 of the dietary treatments during which they will follow a Keto or a low-fat diet. Comparisons among groups at 3 and 6 months of intervention will be conducted.


Clinical Trial Description

The ketogenic diet (KETO) is popular for weight loss and is gaining interest as a treatment for type 2 diabetes (T2D) because it is believed to help manage blood glucose and weight. However, KETO is often high in saturated fats (SFA), which may increase cholesterol and other cardiovascular (CVD) risk factors, such as inflammatory profile. Substituting a heart-healthy oil for SFA may improve these outcomes. The purpose of our study is to investigate the health beneficial effects of a healthy KETO diet supplemented with Canola oil, compared to a traditional Keto Diet and low-fat diet in adults at high risk of type 2 diabetes. Participants will be randomized to one of these three diets and will receive nutrition counselling during 6 months. Each month, participants will receive a 1-month supply of canola oil in the KETO-Can group, butter, coconut and palm oil in the KETO-Sat group and whole grain cereal and/or oatmeal in the LFD group to ensure compliance to key nutrients. Fasting blood samples will be taken at baseline, 3 and 6 months. Anthropometric measurements (weight (BW), waist circumference (WC), BMI), blood pressure (BP), systemic inflammation (CRP, IL-6, TNF-α, IL-18), immune function, cardiometabolic risk factors (TG, cholesterol, glucose, insulin and HbA1C) will be determined at each time point. A total of three 24h-recall questionnaires (2 weekdays and 1 weekend day) will be completed at each time point (baseline, 3 months, 6 months). Once a month (in between study visits) a 24h-recall will be completed before meeting the nutrition expert in order to personalize recommendations according to participants' respective diet groups. As in any nutritional study, adherence for nutrition study is a key factor and will be measured differently during the intervention. Menu examples will be provided for each group to facilitate adherence. Adherence to the study protocol will be assessed by (1) evaluation of monthly 24-h recall data (5 in total). Participants with 4 out of 5 recalls being within meeting dietary objectives will be considered highly compliant, 2 or less would be low compliance; (2) Ketosis state will be measured at each study visit using ketone strips to assess adherence to both KETO diets; (3) Participants will be asked to return any remaining food provided each month to determine the level of consumption. Finally, fatty acid composition in plasma (short-term) and red blood cells (RBCs; reflect the past 3 months) will be assessed to confirm adherence between the two keto diets. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT05681468
Study type Interventional
Source University of Alberta
Contact Paulina Blanco Cervantes, MSc
Phone 7804929506
Email blancoce@ualberta.ca
Status Recruiting
Phase N/A
Start date September 18, 2023
Completion date May 31, 2026

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