A device for environmentally friendly destruction of health-relevant and cosmetically/aesthetically relevant cell structures, in particular tumour cells, which have at least one metallic nanoparticle on their cell membrane, is disclosed. The device includes a primary coil for generating an inhomogeneous primary magnetic field, a secondary coil for generating an inhomogeneous secondary magnetic field and a control device which is designed for actuating the primary coil in such a way that the nanoparticle is deflected by the primary magnetic field and for actuating the secondary coil in such a way that the secondary magnetic field oscillates in relation to the primary magnetic field and deforms it periodically in order to generate Alfvén waves which deflect the nanoparticle, whereby the cell membrane of the cell structure is torn up by the nanoparticle and the cell structure is consequently destroyed.