A friend is wearing a copper bracelet, which he says helps his arthritis. I think this is fine, but I wonder how much copper his skin is absorbing, and is there a toxic effect in the long term?
It turns his wrist a bit green.
Also, how does this idea work? Is there a chemical reaction in the body? Or, if it's all in your mind, isn't it still effective since the pain is gone, for whatever reason?