In this scientific non-fiction book, Rheumatologist and Professor of Experimental Medicine Rainer H. Straub holistically explains a central conflict in the body: why the battle for energy ages us and leads to fatigue, stress, sleep disorders, weight problems, libido issues, and hypertension. He explores how this particularly affects people with chronic inflammatory diseases. With fascinating insights, the author takes us on a journey into evolutionary biology, the present state of energy regulation, and the forward-looking field of psychoneuroimmunology. Learn to understand the connections between inflammatory processes and energy regulation in the body, drawing implications for dealing with diseases and therapeutic possibilities.