Abstract: Described is a process for the treatment of cancer in at least one region of host organism containing cancer cells and normal cells without substantially damaging living normal cells comprising:providing to a host organism minute particles capable of being inductively heated and of size capable of being absorbed into cancer cells,determining, after a period of metabolic time, the magnetic susceptibility of the particles with said region,subjecting the organism to an alternating electromagnetic field to inductively heat said particles at that point in metabolic time when the maximum difference in magnetic susceptibility between the cancer cell and normal cells within said region occurs, andcontinuing the inductive heating of said particles to attain an increase in intracellular temperature to selectively kill the cancer cells.