"Travis Christofferson provides a compelling historical account of how cancer has been misunderstood as a genetic disease when, in fact, it is a type of metabolic disease. Unlike normal cells, which obtain their energy from respiration, cancer cells have damaged respiration and obtain much of their energy from the primitive process of fermentation. Travis describes how the mutations in tumors arise as an effect of respiratory damage and cannot be the cause or drivers of cancer. The information presented in Tripping over the Truth will have profound consequences for how cancer is managed and prevented. Metabolic therapies will be more effective and less toxic than the current gene- or immune-based therapies and have the potential to significantly improve quality of life and long-term survival for millions of cancer patients worldwide.”--Thomas N. Seyfried, PhD, author of Cancer as a Metabolic Disease