The wrong food can kill you. The right kind of food can help you live longer. Additives are unnatural. Unnatural food is unhealthy food. These are assumptions that many or most of us have today about the things we eat. That we believe eating to be a matter of life or death is in part due to a man most of us have never heard of, Harvey Wiley. Head of the Division of Chemistry at the Department of Agriculture, and later employed by the magazine Good Housekeeping, Wiley became an advocate of "pure food", and got his ideas out through masterly use of newspapers eager for copy. "You don't understand, sir," said President Theodore Roosevelt to one businessman complaining about Wiley, "that Dr. Wiley has the grandest political machine in the country."

Jonathan Rees's new biography of Wiley, The Chemistry of Fear: Harvey Wiley's Fight for Pure Food, is not only about Wiley, but about scientific progress, the meaning of food and health, progressivism, the bureaucratic state, and that place where science and publicity meet.  It's a great read.

Professor of History at Colorado State University, Jonathan Rees was previously on the podcast in Episode 96 talking about the curious history of keeping things cold.