US scientists found that the dietary supplements glucosamine and chondroitin sulfate were no more effective than placebo at slowing down the rate of cartilage loss in the knees of patients with osteoarthritis; however they also said the trial was probably too short and too small, and spoke more to scientists about how to conduct further research in this area than than to patients. The two-year multicenter study was the work of rheumatologist Dr Allen D.
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