The model on which modern western medicine is based - mechanism, has been useful and has allowed many advances. Unfortunately, mechanism has become a canonized doctrine that now obstructs real progress.

It would shock most people to know that conventional western medicine is at least fifty years behind the times with respect to scientific thought. J. Robert Oppenheimer, the developer of the atomic bomb and one of the great physicists of our age, remarked that he felt pity for conventional western physicians since they had taken to heart the assumptions of Newtonian physics, a model which physicists had “laid to rest fifty years ago.”
— from 'Promorpheus' a treatise written by Professor Nelson, the inventor of the Quantum Biofeedback trivector technology