By the way, doctor: Can I take a pill instead of B12 injections?
Why have we doctors used shots for so many years? No, it's not because we enjoy giving shots. It's because when the cause and cure of pernicious anemia was discovered in the 1920s (here at Harvard, by the way), the best evidence of the day said that pills wouldn't work. We now know they can, at least for some people.
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