If you want to find out more about Dianetics and Scientology, the best way to do this is to read an L. Ron Hubbard book on the subject. I personally recommend you read Dianetics: The Modern Science of Mental Health.
This book showed me how the mind can make the body very ill. It explained how the technology of Dianetics works and how to teach the basic cause of illness and rid the mind of what is causing it.