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Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.
Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.
About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
More than 30% of American adults, and about 12% of children utilize health care approaches that were developed outside of conventional medicine.