Vitamin D supplementation for individuals with knee osteoarthritis and low 25-hydroxyvitamin D levels did not reduce knee pain or slow cartilage loss, according to a study appearing in the March 8 issue of JAMA.
Symptomatic knee osteoarthritis occurs among 10 percent of men and 13 percent of women age 60 years or older. Currently there are no disease-modifying therapies for osteoarthritis. Vitamin D can reduce bone turnover and cartilage degradation, thus potentially preventing the development and progression of knee osteoarthritis. Observational studies suggest that vitamin D supplementation is associated with benefits for knee osteoarthritis, but current evidence from clinical trials is contradictory.
