Nowadays there exist a huge diversity of products with
magnets in pillows, blankets, bracelets, patches, belts, pendants, or insoles, promising, according to the manufacturers, help against different
health conditions. According to
German Federal Office for Radiation Protection these products exhibit
static magnetic fields in the range of 0.03 and 0.3
Tesla in close proximity to their surface. However, 3-4 mm away from the surface the levels are reduced to a tenth, i.e. in a distance of several centimeters the
magnetic flux density is lower than that of the
geomagnetic field (
German Federal Office for Radiation Protection), therefore, questioning the efficacy of the claims of these products.