The symptoms of a B-12 deficiency include numbness or tingling of the extremities, fatigue, weakness, anemia, swollen tongue, jaundice, difficulty walking, cognitive difficulties, memory loss and paranoia
Urine and saliva tests may have lower accuracy levels and are less commonly used for BAC testing
At first, you may need injections every other day for a couple of weeks or until symptoms start improving
Several factors can impair B12 absorption: Reduced stomach acid production (achlorhydria or hypochlorhydria), common in older adults and those taking proton pump inhibitors or H2-receptor antagonists long-term, impairs the release of B12 from food proteins Pernicious anaemia , an autoimmune condition destroying parietal cells and reducing intrinsic factor production, completely blocks the primary absorption pathway Gastrointestinal disorders including Crohn's disease, coeliac disease, or surgical removal of stomach or ileum sections directly damage absorption sites Metformin , commonly prescribed for type 2 diabetes, may reduce B12 absorption through unclear mechanisms
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