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[51] Diagnosis [edit] According to one review: "At present, no 'gold standard' test exists for the diagnosis of vitamin B 12 deficiency and as a consequence the diagnosis requires consideration of both the clinical state of the patient and the results of investigations." [52] The vitamin deficiency is typically suspected when a routine complete blood count shows anemia with an elevated mean corpuscular volume (MCV)
People with very fair skin often carry MC1R gene variants (like R151C or R160W) that produce a receptor less responsive to melanocortin signaling
It fights radicals and reduces the expression of melanin to whiten the skin and prevent signs of ageing
But most people who have heard the name have no idea what it actually is, how it differs from older oral options, or whether it's the right fit for their metabolic goals
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