Is there evidence that glucosamine improves things?

In collaboration with Prof Phil Conaghan of the University of Leeds, a world expert on joint pain, ‘Trust Me, I’m a Doctor’ recruited 80 people with painful knees. Phil and his team assessed their joints and asked them to rate their pain levels, and then 40 of them were given a "supplement pill" to take daily and the other 40 were given daily exercises. After two months, we asked them to rate their pain again. And the results were very tell...
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