I LOVE these Anchi Crystals, they work on everything. I have gotten rid of Arthritis in my left hip and I could hardly move with it and now it is gone. The Right hip took a little longer but all pain is gone now. My body metabolism has gone up, and I was able to take off one layer of clothing that I wear inside the house to keep warm. And I removed a blanket from the bed. It is not the stones but the energy field around them. Dutch Scientists got a $400,000 grant to study the field, and so it is photographed and researched and documented. A Russian physicist has looked at them. It is the electrical fields that they work on, the fields in the body and anything else as well. You can't go wrong getting these. Myra