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Causes of Pernicious Anemia The primary cause of pernicious anemia is the lack of intrinsic factor , a glycoprotein produced by the stomachs parietal cells
As greater amounts of niacin are consumed, the amounts of these methylated elimination metabolites increase
Within 48 hours after injection of 100 or 1,000 mcg of vitamin B12, 50 to 98% of the injected dose may appear in the urine
The GH response is generally reported to plateau around ~100 mcg per dose , so the protocol is built around that response ceiling rather than ever-larger single doses [3] [4]
2024;191(6):R117
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