Osteoarthritis (OA) is the most common form of arthritis and is a leading
cause of physical disability, increased health care usage, and impaired quality
of life.1,2 An estimated 12% of
the US population aged 25 years and older (nearly 21 million persons in 1990)
have clinical signs and symptoms of OA.3
Towheed TE, Anastassiades TP. Glucosamine and Chondroitin for Treating Symptoms of Osteoarthritis: Evidence Is Widely Touted but Incomplete. JAMA. 2000;283(11):1483–1484. doi:10.1001/jama.283.11.1483
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