sudden loss of hope and courage can have a deadly effect.

http://spiritualitydotcom.blogspot.com/I once had a dramatic demonstration of the close link between the loss of faith in the future and this dangerous giving up. F., my senior block warden, a fairly well-known composer and librettist, confided in me one day: "I would like to tell you something, Doctor. I have had a strange dream. A voice told me that I could wish for something, that I should only say what I wanted to know, and all my questions would be answered. What do you think I asked? That I would like to know when the war would be over for me. You know what I mean, Doctor-for me! I wanted to know when we, when our camp, would be liberated and our sufferings come to an end." "And when did you have this dream?" I asked. "In February, I945," he answered. It was then the beginning of March. "What did your dream voice answer?" Furtively he whispered to me, "March thirtieth." When F. told me about his dream, he was still full of hope and convinced that the voice of his dream would be right. But as the promised day drew nearer, the war news which reached our camp made it appear very unlikely that we would be free on the promised date. On March twenty-ninth, F. suddenly became ill and ran a high temperature. On March thirtieth, the day his prophecy had told him that the war and suffering would be Over for him, he became delirious and lost consciousness. On March thirty-first, he was dead. To all outward appearances, he died of typhus.
Those who know how close the connection is between the state of mind of a man-his courage and hope, or lack of them - and the state of immunity of his body will understand that the sudden loss of hope and courage can have a deadly effect. The ultimate cause of my friend's death was that the expected liberation did not come and he was severely disappointed. This suddenly lowered his body's resistance against the latent typhus infection. His faith in the future and his will to live had become paralyzed and his body fell victim to illness-and thus the voice of his dream was right after all. (p 118-120)