John Harvey Kellogg , the Living Temple

Gains in scientific and technological knowledge in the West led not only to increases in the amount of food produced, but also led to improvements in knowledge of the nutritional values of food and the physiological effects various foods have on people. Such advances were made possible by industrious work by scientists, farmers, scholars, entrepreneurs, and inventors. The following excerpt is taken from a book on human physiology and health written by John Harvey Kellogg (1852–1943), a medical doctor, the director of a health clinic (sanitarium) in Battle Creek, Michigan, and a staunch advocate of vegetarianism and holistic medicine. Together with his brother Will, he invented several dry breakfast cereals, including Corn Flakes. The excerpt discusses the harmful effects on digestion of consuming refined sugar and the proper methods of preparing readily digestible cereal. The excerpt, along with the full text, can be found here.