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Decreased or lack of absorption due to stomach/bowel issues such as celiac disease, bariatric surgery, Crohn's disease and aging
Risk increases significantly after 2+ years of use Post-bariatric surgery patients gastric bypass removes or bypasses the sites of intrinsic factor production and B12 absorption People with autoimmune conditions pernicious anemia (anti-intrinsic factor antibodies) and autoimmune gastritis directly block absorption People with GI conditions Crohns disease (especially ileal involvement), celiac disease, SIBO, and chronic H
Okay, we have covered the basics of B12 injections
Once opened, it should generally be used immediately because it does not have the same protection against bacterial growth
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