B12 deficiency nearly caused my death in 2015; did you have any idea that’s something to worry about? Like me four years ago, you probably didn’t—and it’s largely due to a fellow known as “Dr. Feelgood.” This charlatan popularized B12 in the 1960s, administering it in a decidedly not-medical fashion, giving it to those without a deficiency because of the energy boost it offered, often combining it with intoxicants and other substances.
This eventually led to it culturally being thought of as a “snake oil,” or basically worthless and unnecessary medicine—which had unfortunate and severe effects on how it’s now treated by the medical community at large. And this happened despite the 1934 Nobel Prize in Medicine being awarded to the man who stopped the formerly frequent deaths of the deficiency, then known as pernicious anemia.
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