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It is required for the synthesis of DNA and the maintenance of the myelin sheath that protects nerves
Fragoulis GE, Evangelatos G, Arida A et al (2020) Treatment adherence of patients with systemic rheumatic diseases in COVID-19 pandemic
Conditions like pernicious anaemia (an autoimmune condition affecting a protein called intrinsic factor vital for B12 absorption), stomach issues (such as from reduced stomach acid or certain medications like proton pump inhibitors), intestinal disorders (like Crohns disease or coeliac disease), or even surgical removal of parts of the small intestine (e.g., gastric bypass surgery) can prevent proper absorption
therapeutic options in psoriatic arthritis
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