Brief Answer: Safety not established Detailed Answer: I did use the Ceragem massage beds. The combination of heat, infrared and rollers can relax the strained muscles along the back and are OK for that. They cannot compare to a massage given by a professional masseur though, these are just simple machines doing a fixed mechanical routine, unable to consider your height, body shape or specific individual conditions, let alone making a diagnosis and choosing the best and most efficient treatment for you. That having been said, there is nothing in the device that would be BAD for a patient as long as the bed is being used according to the companies instructions. I hope this helps, Vinay

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