Simple Fiber Supplement Cuts Knee Arthritis Pain in Just 6 Weeks, Study Finds

A University of Nottingham trial found that six weeks of daily inulin eased knee osteoarthritis pain in 117 adults.

Participants also showed better grip strength and lower pain sensitivity, suggesting benefits beyond pain relief.

Inulin is a low-cost prebiotic fiber that may work through gut-related effects such as GLP-1 and butyrate pathways.

The study also had far fewer dropouts than a digital physiotherapy program, pointing to better adherence.