Pernicious anemia symptoms: Symptoms of B12 deficiency can include:[ref] fatigue, paleness, shortness of breath (anemia symptoms) headaches, dizziness tingling in the extremities trouble walking or uncontrollable muscle movements cognitive issues, brain fog depression or irritability intestinal issues glossitis Vitamin B12 (cobalamin) is found in animal proteins such as meat and eggs and in supplement forms
This gentle introduction prevents potential damage to the delicate peptide structure
Nat Rev Dis Primers (2017): Vitamin B12 is essential for normal nervous system function via its role in myelin synthesis and for circulatory system function through its role in red blood cell maturation in the bone marrow
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(2024) 177:Jc116