The only FDA approved study that has any claims for the benefits of ions is for the use of air filters. Any other claims are beyond the scope of any studies. Many of the bracelet companies were being sued due to false advertisement so now they won't give definite claims as to what the bracelets do because then they can be definitively tested, which means that they can be definitively debunked. So they make as broad as claims as possible (your "general health" will get better) to dodge lawsuits while relying on the gullibility of trusting people who just want to be healthier.
It does have a placebo effect...and maybe there's something to it.... Just nothing verified.
edit on 19-8-2012 by TheLegend because: (no reason given)