Medicine does not exist outside of time. What was considered safe and progressive in one period may appear unacceptable decades later. The reason is the limitation of knowledge, tools, and methods of risk assessment.
Mercury Is Not a Single Substance, but a Group of Chemically Distinct Compounds. Each form of mercury affects the human body differently. Its form determines how it enters the body, how quickly it is eliminated, how easily it accumulates, and which systems it damages—ranging from the respiratory tract to the kidneys and brain.
Mercury is a unique substance: it is the only metal that exists in a liquid state at room temperature. Thanks to its unusual properties, it has fascinated people since ancient times. It was used in medicine as a remedy, in alchemy as an “element of transformation,” and later in industry—for making mirrors, thermometers, lamps, and other products.
