ELECTRIC AND MAGNETIC-FIELDS AND HEALTH OUTCOMES - AN OVERVIEW

In recent years interest has increased in the biological effects and p ossible health outcomes of weak electric and magnetic fields. Studies have been presented on magnetic fields and cancer, reproduction, and n eurobehavioral reactions. Epidemiologic studies on childhood leukemia and residential exposure from power lines seem to indicate a slight in crease in risk, and excess leukemia and brain tumor risks have been re ported in ''electrical'' occupations. In spite of a large number of ex perimental laboratory studies, however, no plausible and understandabl e mechanism has been presented by which a carcinogenic effect could be explained. International guidelines state that the scientific knowled ge on magnetic fields and cancer does not warrant limiting exposure le vels for the general public and work force down to the low levels of e veryday exposure. Study results on reproduction, including adverse pre gnancy outcomes, and neurobehavioral disorders are generally considere d insufficiently clear and consistent to constitute a scientific basis for restricting exposure.