Don't waste your money on the braceletes, etc. Your entire body is subjected to a magnetic field of 54,000 to 58,000 nanoTeslas (depending on your latitude and longitude) every moment of your life. MRI machines do, in fact, use DC magnetic fields that are upwards of five times this intensity, but they are for imaging and NOT for treatment of anything. Some AC fields might be helpful, but others (e.g. in the microwave or gamma wavebands) are absolutely deadly. In any case, the bracelets, etc. generate only DC, and you are already getting that treatment.