I actually have one that was given to me. At a demo it did relieve my hangover and the demo girl said she used it on her eyes and it improved her eyesight. I use it just to make myself feel better. To tell you the true I like it and have meditated with it but I haven't used it enough daily to be able to tell if it had any effect on me or not. What does work for me are the Rife frequencies. I have played around with a computer program that produces frequencies using your computer and an amp. I have tens electrodes hooked up via speaker wires. I have been using it the last month and wow it does work. I have used it for poison ivy and most recently a seriously bad candida issue. It would be alot less expensive to try than the lifestream.