OverviewCould the secret to easing knee pain be hiding in your breakfast bowl instead of your medicine cabinet? A simple daily prebiotic fiber supplement may help reduce knee osteoarthritis (OA) pain while improving physical function, according to a new clinical trial published in Nutrients. Results showed that both inulin and physiotherapy independently reduced knee pain. Larger, longer-term studies are needed to confirm the benefits and determine whether combining dietary fiber with exercise can provide even greater relief for people living with knee osteoarthritis. ; Effect of Prebiotic Supplementation With and Without Physiotherapy on Pain and Pain Sensitivity in People with Knee Osteoarthritis.