To the best of my knowledge there are no reputable and reliable studies involved with the use of Earth's magnetic field machines with patients with cancer. There are a few studies on Electromygraphic (EMG)biofeedback in symptom management. Those studies demonstrate  beneficial effect of electromyography (EMG) biofeedback-assisted relaxation on cancer-related pain in patients having advanced cancer, and others show electromyographic (EMG) and skin-temperature biofeedback have beneficial effect in decreasing nausea and anxiety during chemotherapy.

Moshe Frenkel, M.D.