Most people are terrified of fever and quickly rush to take a Tylenol. Fever is not the cause of illness; it is the body’s response to fight an infection. Fever causes the immune system to be activated so that it can fight the infection. Fever allows the body to return to health. If patients in the hospital intensive care units experience fever, aggressively fever suppression is the norm. Recent research by Dr. Schulman and colleagues at University of Miami Leonard M. Miller School of Medicine have shown that if instead the patients are carefully monitored and the fever is not suppressed the death rate in the ICU is reduce seven fold. Robert Gorter and I discuss the important role of fever and possible harm of fever suppression in our new book, Fighting Cancer.