The Fasting Cure: 1911 First edition

Upton Sinclair Jr. (September 20, 1878 – November 25, 1968) was an American writer who wrote nearly 100 books and other works in several genres. Sinclair's work was well known and popular in the first half of the 20th century, and he won the Pulitzer Prize for Fiction in 1943. His most famous book, The Jungle from 1906, was about the American meat-packing industry. Sinclair was keenly interested in health and nutrition. He experimented with various diets, and with fasting. He wrote about th...