Mark Starr

“was the ancient theory that health and illness resulted from a balance or imbalance of bodily liquids (humors). One of the most common treatments associated with this practice was bloodletting. This medieval belief relentlessly persisted into the early nineteenth century. For example, in 1827, 33 million leeches were imported into France.”
― Starr MD, Mark, Hypothyroidism Type 2: The Epidemic: REVISED EDITION