We do not know what we do not know! The book you hold in your hands may be one of the greatest gifts you could give yourself. This literary work is a tribute to the functioning of the human body, as well as to the wonderful defense mechanisms it possesses, allowing it to face and overcome all the dysfunctions we create for it. We will discover together that our body does not make mistakes, but always tries with its mechanisms to self-protect, to adapt each time, and to face external and internal dangers with one and only purpose: to safeguard and protect our health at all costs. When I started writing this book, I set some specifications that it had to meet before its publication. It had to be innovative and written in simple and understandable language. It had to debunk all the myths surrounding nutrition and prevention. It had to be timeless and not "end" with one reading. It had to be an important advisor and guide, to which anyone could refer at any time. No reader should read it without finding some missing pieces of the puzzle of problems that may concern them and without being inspired regarding the very important field of prevention. It should contribute to improving the quality of life of the readers. It should contain many tips on nutrition, prevention, and health, and finally, it should be a valuable gift of knowledge, information, proper awareness, and optimism for all people. Whether I have achieved these goals, only you, the readers, will judge. Welcome to the wonderful journey of exploring the marvelous world of our body's functioning, in which I will have the honor of being your guide! Enjoy your reading