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The studies were done on rodents, the b12 isnt available in the kidneys for very long, weeks, not months it seems.and whether humans with b12 deficiency because of a broken system can access this b12 we wont know without further research
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Vitamin B12 (cobalamin) is a water-soluble vitamin that your body needs for several critical functions
This makes it hard for them to circulate in your blood and may cause anemia
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