There are many bioelectromagnetic (BEM) devices re-emerging in the 21st century, based on high voltage Tesla coils, that apparently bring beneficial health improvements to human organisms. Electromedicine or electromagnetic medicine are the terms applied to such developments in the ELF, RF, IR, visible or UV band. With short term, non-contacting exposures of several minutes at a time, such high voltage Tesla PEMF devices may represent the ideal, non-invasive therapy of the future, accompanied by a surprising lack of harmful side effects. A biophysical rationale for the benefits of BEM healing a wide variety of illnesses including cancer, proposes a correlation between a bioelectromagnetically restores transmembrane potential, and the electron transport across cell membranes by electroportation, with normal cell metabolism and immune system enhancement.