"Fast Food Nation" is a non-fiction book by Eric Schlosser that explores the fast food industry's impact on American culture, economy, and health. It examines how fast food chains like McDonald's and Burger King have transformed the way food is produced and consumed, leading to significant changes in dietary habits. The book also delves into the working conditions of employees in the fast food industry, highlighting issues such as low wages and lack of benefits. Additionally, it discusses the environmental consequences of mass food production and the influence of fast food on global eating habits.