Is there radiation on the magnetic disk? Can playing with magnetic films cause cancer?

The magnetic sheet will produce a magnetic field, which will pass through people and things around. There's something in the magnetic field. The magnetic field of ordinary magnets is harmless to people. Even without magnets, the earth itself has a magnetic field, and you have nowhere to run. The magnetic film will not radiate, nor will it cause cancer, but don't put it with the mobile phone, which will interfere with the inside of the mobile phone equipment. Many health products contain strong magnetism, which is said to promote blood circulation and so on.