Magnets are not meant to be used with pacemakers or automatic internal defibrillators. Nor in cases of pregnancy. There are some other basics to know about magnets. To begin with the power of a magnet. The magnet's strength is determined by its size, weight and the type of material it is made of.
Magnetic therapists have general guidelines for magnetic use.
Magnets with 1000 to 3000 gauss power are recommended for chronic diseases like rheumatism, paralysis, backache and injury to large muscles. More delicate parts of the body such as eyes or ears require less gauss power of around 500. 500 gauss should also be employed when treating children. The depth of penetration of a magnetic field into the body is another important factor in magnetic healing and is in direct relationship to the size of the magnet as well as its gauss power. A magnet can have a strength of over 10,000 gauss but if it is small it might only penetrate an inch or two into the body.