No. After magnetized, the magnet file is a permanent magnet file, it won’t hazard to our body. The radiation of the magnetic force lines are limited, just within the scope of a few millimeters. However, for the personnel who implant medical devices in the body, should consult the physician. In addition, the magnetic platen has suction for ferro magnetic material, such as hammer, wrench, watches, etc.  The credit card and ID card are forbidden to close up, in case to cause demagnetization.