For over a century, we've accepted the scientific consensus that cancer results from genetic disease due to chromosomal damage in cell nuclei. But what if cancer isn't a genetic disease after all? What if cancer isn't a disease of damaged DNA but rather of defective metabolism as a result of mitochondrial dysfunction? In this book, Dr Joseph Mercola argues that nearly all disease is caused by defective metabolic processes. Then he reveals what's really causing your metabolism to go haywire: damage and dysfunction in the mitochondria, thousands of which are at work in nearly every cell in your body, generating 90 percent of the energy you need to stay alive and well. When mitochondria become damaged in large numbers, it is impossible to stay healthy. Dr Mercola shows that you can to take control of your health simply by giving your body the proper fuel - a ketogenic diet, very low in carbohydrates and high in healthy fats, is the way to optimize the biochemical pathways that suppress disease and support healing. And the benefits can be astonishing-not only in treating or preventing serious illness, but in boosting your brainpower, increasing your energy, helping you lose weight and keep it off, and much more.