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Vitamin B12 deficiency Having trouble absorbing vitamin B12 from food, lacking intrinsic factors (for example, as a result of pernicious anaemia), having gastrointestinal surgery, taking certain medications for an extended period of time (such as metformin or proton pump inhibitors), and nutritional deficiencies are all causes of vitamin B12 deficiency
Over months of treatment, this shift produces visibly thicker, longer hair
187 This degradation results in DNA damage, potentially contributing to hepatocarcinogenesis, particularly in hepatocellular tumors with high NO synthase and low GSNOR levels
Anyway, all my tests, and Ive had a lot, come back normal
Nelson & Russell, Reference Nelson and Russell2013)
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