This book examines the biology of starvation in humans and other organisms. Topics discussed herein include the physiological landscape of the stationary phase and the molecular events that allow the Mycobacterium smegmatis species to survive prolonged periods of starvation; the biochemical aspects of starvation in yeasts; the epidemiology of hunger in the world and the hunger-obesity paradox; starvation of bacteria for amino acids as an example of prokaryotic response to nutritional deprivation; intra-uterine growth retardation due to maternal under-nutrition; and the physiological changes during starvation in fish.