It is a well known fact in Medical Research that dummy pills which are used in clinical trials provide surprising results often equaling relief provided by actual drugs. This is known in the medical parlance as placebo effect. It is often used in persons with Parkinson Disease. Parkinson Disease is a degenerative brain disorder characterized by tremors, stiffness and balance problems. A 2008 meta-analysis found that placebos used in clinical trials of Parkinson’s treatments improved symptoms by an average of 16%.
Patients suffering from Parkinson’s disease were treated with placebo instead of regular medication were found to perform better when they were informed that they were treated with an expensive drug which was in fact a placebo.