On page 197 of "Science and Health with Key to the Scriptures" by Mary Baker Eddy, these words are written: "A minutely described disease costs many a man his earthly days of comfort. What a price for human knowledge!"
Before I became interested in Christian Science, a number of my fellow workers had undergone medical treatment for appendicitis. After listening to one who had undergone such an operation, I began to watch for symptoms in myself. Eventually I too had an appendectomy. But despite the operation I still experienced pain.
Still retaining in thought the symptoms and looking upon the effects manifested in the body as realities, I grew worse. After two years of various treatments, I was in an extremely nervous state. I was unable to partake of food and experienced a subsequent loss of weight. The condition was diagnosed as thyroid trouble, for which I was later under the care of specialists.