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Glucosamine supplements are thought of as beneficial in reducing aches and pains caused by arthritis. Medical studies, however, find little evidence that glucosamine reduces symptoms of arthritis. Despite the most recent study in this area, there is still some dispute as to whether the type of glucosamine used for the study was appropriate, so some doctors may still recommend it to their patients.
The most revealing study, published in the 23 February 2006 issue of the New England Journal of Medicine, evaluated over 1500 people with an average age of 59. Most of them suffered from knee pain caused by arthritis. Patients were divided into five separate groups. The groups received medication, supplements, or placebo as follows: