Sue The trouble with using medical interventions that do not respond well to clinical trials is this: If you were a doctor which intervention would you choose for your patient, the trialled or not trialled? If you were in hospital with a life threatening issue which would you choose, the trialled or not trialled? It may be that magnetotherapy has done wonders, for example, some cancer sufferers. But is 'I prefer to go with experience" the correct basis to recommend a therapy for such serious problems? It is important to have a way of distinguishing what is effective and what is not, using the best method available, at the moment it happens to be double blind placebo trials with a randomised selection of patients. This is a generalisation and an important one. You are feeling sleepy