Meta-analysis confirms weight management effects of chicory root fibre
A comprehensive systematic review and meta-analyses of 32 randomised controlled trials has demonstrated statistically significant reductions in body weight and other anthropometric measures following chicory root fibre supplementation. The research, published in the American Journal of Clinical Nutrition, provides robust evidence for the role of chicory-derived inulin and oligofructose in weight management applications.
Benefits across multiple parameters
The meta-analyses, which evaluated data from nearly 1,200 participants, revealed that supplementation with chicory root fibre led to a clinically meaningful 2% reduction in body weight compared to placebo interventions. This effect was observed independent of participants’ health status and showed increasing effectiveness over time.
Dose-response relationship
Subgroup analysis identified that a daily dose of 10g chicory root fibre was particularly effective for weight reduction. The research team, led by Professor Raylene Reimer at the University of Calgary, found that alongside decreased body weight, participants showed improvements in body mass index (BMI), fat mass and waist circumference measurements.
“Prebiotics have been investigated for their ability to modulate the gut microbiota and affect various aspects of metabolic health,” explained Professor Reimer. “This systematic review and meta-analyses show that inulin-type fructans, specifically those derived from chicory root, beneficially impact multiple facets of body weight management.”
Methodology and evidence quality
The review followed rigorous protocols outlined in the Cochrane Handbook for Systematic Reviews and Interventions and adhered to PRISMA reporting standards. Studies were selected based on consumption of chicory root fibre in randomised controlled trials measuring effects on body weight, BMI, total body fat, body fat percentage, or waist circumference in adults across all health conditions.
Notably, when supplementation continued for at least eight weeks, researchers observed reductions in body fat percentage. The findings are particularly relevant given current global health priorities, with WHO data indicating that 2.5 billion adults are currently overweight and one in eight people live with obesity.
Natural prebiotic properties
The study focused on inulin-type fructans derived from chicory root, which are extracted using hot water processing rather than chemical methods. These prebiotics selectively promote beneficial gut bacteria growth, particularly Bifidobacteria, and are believed to influence satiety mechanisms that help regulate food intake.
The research provides valuable evidence for food manufacturers developing weight management products, suggesting that incorporation of chicory root fibres could offer scientifically-validated benefits. The natural, non-GMO status of these ingredients also aligns with clean label trends in food and beverage applications.
