Negative ions effect benefit on the body ? I saw many claim on the internet by company selling bracelet, necklace and insole that emit negative ion using volcanic ash,tourmaline or a mixture of many mineral. They claim negative ion research stating increase energy, deeper sleep, more focus, increased alertness, better balance, improved circulation, faster recovery, enhanced strength, better flexibility, improved response, stabilized blood pressure, reduced fatigue, boosted immune system, reduced stress, arthritis relief, faster muscle repair, aid in relaxation, greater well being. Can someone point me out to any study on ions effect on the body ? I read that the ministry of health in Japan as officially approve those kind of bracelet for there therapeutic effect and personally I did some balance test and felt a huge difference in my balance and trust me I exercise every day and do balance training every other day so I am kind of very accomplished in that field to be able to distinguish any tricks.