Abstract: A method and system for treating Alzheimer's disease in a patient is provided. The system includes a magnetometer configured for measuring a directional component of a local magnetic field located in a vicinity of the patient's head, thereby producing a measurement B, a mat such that the patient may rest his head on said mat, the mat comprising coils that produce a uniform magnetic field emanating perpendicularly to a plane of the mat, a current generator for generating and transmitting a current to the coils of the mat, and a computing system for: receiving the measurement B, calculating a frequency f of a current necessary for the coils to produce ion cyclotron resonance of amyloid beta, wherein the following formula is used to calculate said frequency f: f=(½?)(qB/m), where q/m is a charge to mass ratio of amyloid beta, and generating said current.