Upton Sinclair was a man in search of truth, in search of knowledge, in search of a good story, and forever in search of good health. Sinclair had many chronic ailments during his life and was always looking for new ways to improve his wellbeing. He experimented with and explored all the trends and new ideas of the early 20th century. Sinclair spent years as a vegetarian after researching the meat packing industry for his bestselling 1906 exposé, The Jungle. He learned about fasting to improve digestion and a host of other maladies. In this book he summarized and popularized the research of contemporaries who were pioneers in the movement for self-health, while passing on his personal experiences. This is not a book of medical advice and should not be read as such. It is collected wisdom and anecdotal evidence from 100+ years ago.