 Even in the magnetic fields used in magnetic resonance imaging, which are many times stronger, none of the claimed effects are observed.If the body were meaningfully affected by the weak magnets used in magnet therapy, MRI would be impractical.<ref></ref><ref></ref><ref></ref>

Several studies have been conducted in recent years to investigate what role, if any, static magnetic fields may play in health and healing.Unbiased studies of magnetic therapy are problematic, since magnetisation can be easily detected, for instance, by the attraction forces on ferrous (iron-containing) objects; because of this, effective blinding of studies (where neither patients nor assessors know who is receiving treatment versus placebo) is difficult.