Fiber and Metformin Combination Therapy in Adolescents With Severe Obesity and Insulin Resistance

This is a 12-month, single center, three-arm parallel design, double-blind, randomized clinical trial, to compare the effects of supplemental dietary fiber and metformin (MET) alone and in combination over 12 months on glucose metabolism (insulin resistance \[IR\]), inflammation and BMI in adolescents with obesity and IR, and to assess the relationship between therapeutic intervention(s) and changes in gut microbiome composition and function. Since MET and FIBER have been shown to reduce weight and increase insulin sensitivity through distinct but overlapping mechanisms of action, our central hypothesis is that the combination of FIBER + MET will have a synergistic effect and be more effective than FIBER or MET alone in improving metabolic function (IR) and reducing BMI and inflammation in adolescents with obesity, IR and family history (FM) of T2DM. .

NCT Number	NCT04578652
Lead Sponsor	University of Alberta
Conditions	Obesity, Childhood, Insulin Resistance
Enrollment	90 participants
Start Date	2021-10-22
Primary Completion	2026-09 (estimated)
Study Completion	2026-09 (estimated)
Updated on ClinicalTrials.gov	2025-11-17