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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
For Research Use Only (RUO)
Recognition and receptor-mediated endocytosis of the lysosomal acid lipase secreted by cultured human fibroblasts
[DOI] [PMC free article] [PubMed] [Google Scholar] 24.Alexander J., Chang G
Symptoms of a vitamin B12 deficiency include: Anemia Fatigue and weakness Dizziness Memory loss or concentration Rapid heartbeat Excessive bruising Soreness of the mouth or tongue Although there is no solid medical research to support these claims, many people believe that Vitamin B12 is helpful in improving concentration and boosting energy, as well as preventing or improving the following conditions: macular degeneration, a weakened immune system, infertility, sleep disorders, allergies, asthma, skin disorders and heart or kidney problems
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