Arthritic pain in the wrists

My wife, who is 'over 50', but won't let me tell you how many years over 50, has pain in both wrists. As long as she wears her Bioflow Elite Magnotherapy Bracelet, she has no pain.
But if she leaves it off for 24 hours the pain comes back.

She's a nurse, so she cannot wear it during the working day, but wears it while she sleeps.

So magnotherapy has stopped the pain for her, and seems to have stopped the arthritis from getting worse, but has not cured it.