| Summary: | Every human being needs food to survive. By putting food to use man builds his body's cells and keeps them in good repair and functioning properly. This book explains how man finds the food he need in every part of the globe. It gives clear, detailed accounts of the processes of nutrition, by which the body breaks food down to essential nutrients, and it discusses the diseases caused by a lack or oversupply of nutrients. It examines the fads and fancies that have influenced man's choice of foods throughout history, and draws sober conclusions about the state of the world's food supplies in an era of rapid population growth. Each chapter in the book is complemented by a picture essay. Chapter 4, for example, tell how the body digests and assimilates food; Essay 4 shows the functioning of the digestive tract in a series of unusual color pictures.
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