 Thus, when she approached medicine as a type of gardening, it was not just as an analogy.Rather, Hildegard understood the plants and elements of the garden as direct counterparts to the humors and elements within the human body, whose imbalance led to illness and disease.Thus, the nearly three hundred chapters of the second book of "Causae et Curae" "explore the etiology, or causes, of disease as well as human sexuality, psychology, and physiology."