The book that you hold in your hands is a vehicle that will take you on a journey into the world of the nutrients contained in food and that are responsible for its healing power, which is why there is a science called Nutritional Therapy, whose objective is to maintain physical, psycho-emotional and mental well-being through the use of all those wonderful elements that make up a true natural pharmacy. Macronutrients such as proteins, fats and carbohydrates will give you the energy necessary to live, the molecules to form and repair tissues and the substances to manufacture hormones, enzymes, peptides, and neurotransmitters that will control the functioning of all organs and systems. Micronutrients such as vitamins and minerals represent the cofactors or key activators of enzymes, which make possible the functioning of the wonderful metabolic machinery that is the basis of life. Phytochemicals such as bioflavonoids, carotenoids, anthocyanins and isoflavones, represent a series of pigments responsible for the multiple colors of fruits and vegetables, with a magical antioxidant power that protects us from cancer, cardiovascular diseases, and immunological disorders.