The German word for "quicksilver" was "quecksilber". American dentists shortened it to "quack" to describe the amalgam-hucksters. Quick-silver Associates write "It is sobering to realize that the original "quacks" were dentists who advocated the use of mercury amalgam."
How many contemporary medical practices are not any better than or are worse than doing nothing or doing something else that is simpler or less expensive? The answer to this question is rocking the foundations of 'evidence-based' medicine.