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Due to its role in heme biosynthesis, deficiency in vitamin B6 can result in microcytic hypochromic anemias that are similar to those caused by iron deficiency or as a result of heavy metal (e.g
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Diabetes medications Drugs like Metformin, used to treat diabetes, are known to impair intestinal absorption

Protein disulfide isomerase-immunopositive inclusions in patients with amyotrophic lateral sclerosis