This book presents both the factors that lead to the development of diseases and those that contribute to maintaining health. It demonstrates that different phenomena, such as health and illness, typically arise from the interplay of multiple factors, and that identifying these factors aids in the development of effective preventive measures. The reader can recognize a large number of individual risk or health factors and may consider them in order to contribute to their own health by changing their behavior. Among other things, a research direction is introduced that encompasses a wide range of different areas of life to identify relevant constellations and interactions. This also enhances the effectiveness of preventive measures.