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While some people can obtain adequate B12 from a balanced diet, others may need injections, especially if they have absorption issues or dietary restrictions

[DOI] [PubMed] [Google Scholar] 61.Penning, T

However, detailed mechanistic insights are limited, with much of the current understanding remaining speculative

NRF2 is encoded by the NFE2L2 (NFE2 like bZIP transcription factor 2) gene

Common causes include: Pernicious anaemia Conditions affecting absorption in the stomach or intestines Certain medications Dietary insufficiency, particularly in strict vegan diets Increasing age Identifying the underlying cause is important because treatment recommendations may vary

The primary concern for peptide researchers today is product purity