Nottingham Trial Finds Inulin Cuts Knee OA Pain in 117 Adults, Improving Grip Strength
Updated
Updated · SciTechDaily · May 24
Nottingham Trial Finds Inulin Cuts Knee OA Pain in 117 Adults, Improving Grip Strength
1 articles · Updated · SciTechDaily · May 24
A six-week randomized trial in 117 adults found daily inulin reduced knee osteoarthritis pain, improved grip strength and lowered pain sensitivity, pointing to a potential new non-drug treatment route.
Inulin appeared to work through the gut: participants showed higher butyrate and GLP-1 levels, biomarkers the researchers linked to pain control and muscle function.
Digital physiotherapy-supported exercise also reduced knee pain, but only inulin improved grip strength and pain sensitivity in the four-group INSPIRE trial.
Adherence was markedly better with the supplement—3.6% dropped out of the inulin group versus 21% in the physiotherapy group—suggesting it may be easier to sustain.
The Nutrients study adds early evidence for a broader gut-muscle-pain axis in osteoarthritis, though researchers and Arthritis UK described the findings as preliminary.
Could a fiber supplement relieve pain and boost strength, unlike GLP-1 drugs that can reduce muscle?
Why did combining a gut supplement with physiotherapy for knee pain show no extra benefit over using either alone?
Breakthrough in Knee Osteoarthritis: Inulin Shows Moderate Pain Relief and Better Adherence Than Physiotherapy in INSPIRE Trial
Overview
Recent research highlights how inulin, a prebiotic dietary fiber, may help manage knee osteoarthritis (OA) pain by supporting gut health. Inulin feeds beneficial gut bacteria, which then produce short-chain fatty acids like butyrate. These fatty acids enter the bloodstream and can reduce inflammation and influence pain pathways throughout the body. This process suggests that improving gut health with inulin could ease OA symptoms. The University of Nottingham's INSPIRE clinical trial is exploring this connection, aiming to find out if inulin can offer a simple, effective, and sustainable way to improve pain and function for people with knee OA.