An electromagnetic radiation treatment regime includes identifying a target area of a patient that comprises at least some cancer cells, or other cells amenable to pathological genetic regulations. An electromagnetic radiation source, for example, a low frequency and/or radio frequency electromagnetic radiation source, is selected, along with treatment session parameters, such as, pulse frequency, pulse duration, electrical current, magnetic flux density, and/or treatment session exposure time. An amount of electromagnetic radiation is applied to the target area, and a response to the electromagnetic radiation by at least some of the cancer cells in the target area is measured. Based on an evaluation of the measured response, the treatment parameters may be modified for one or more subsequent electromagnetic radiation treatment session.