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While B12 is naturally present in animal-based foods such as meat, fish, and dairy, many people struggle to get adequate amounts due to dietary restrictions, absorption issues, or certain medical conditions
I can tell you that personally, I was a teary, emotional, hair-losing mess when my ferritin was at 16 ng/mL
People with complex medical histories, kidney disease, blood disorders, or suspected neurological symptoms should not rely only on supplement labels for decision-making
Published 2019 Sep 23
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