This book investigates the physiological and psychological benefits of pleasure, arguing that positive experiences and attitudes function as a biological mechanism for health maintenance. Psychologist Robert Ornstein and physician David Sobel synthesize clinical evidence to demonstrate how the brain utilizes pleasure as a tool for disease prevention and immune support. By examining the intersection of neurology and lifestyle, the authors present a framework where intentional engagement with positive stimuli serves as a legitimate component of medical well-being.

Experts and readers frequently cite this work as a foundational text for understanding the biological basis of positive psychology. The prose is noted for its accessibility, effectively bridging the gap between complex medical research and practical health advice for a general audience.