Posted By Vassilis Loukidis These devices are used in many homes, beauty salons, health clubs etc, by both men and women to improve their body apperance. I am looking for health and safety information regarding the long or short term usage of such devices. The main question is "are they harmless when used and why?". I do know that pregnant women,people with pace makers diabetics and other categories should not use them. The information that I am seeking should also include details as to the amount and type (AC od CD and frequency)of current going through the body at any time