The recent development of superconducting magnet technology and the consequent increase inhuman exposure to large (41 T) static magnetic fields is at present leading, by a considerablemargin, appropriate epidemiological and biological research that would enable the developmentof a proper health risk assessment. The WHO/ICNIRP/NRPB workshop focused particularly onthe potential for human exposure to these large magnetic fields, and assessed the interactions ofsuch fields with biological tissue and the results of recent experimental and epidemiological studiesof possible effects.