Can a dietary supplement pick up the pieces? Glucosamine, often recommended for joint pain, is one of the most popular supplements on the market. And considering the health concerns recently associated with nonsteroidal anti-inflammatory medications, I thought it would be worth looking into whether glucosamine lives up to the hype.Background: Glucosamine and chondroitin are often combined together and used to treat osteoarthritis (OA), which occurs when the cartilage covering the end of the bone near the joint breaks down. OA affects the knees, backs, hips, hands and feet of more than 21 million people over age 45. And, according to...