If you prefer cooking your own tuna fillet, make note that the muscles right below the skin (the dark muscles) contain a high concentration of vitamin B12
MedlinePlus specifically names myeloproliferative disorders, including polycythemia vera and chronic myelogenous leukemia
Furthermore , it ensures your nervous system works as it should
Correcting B12 changes your metabolism and nervous-system signalling, and that adjustment itself can feel like tiredness, lightheadedness or a vague off feeling before things settle
Key Takeaways Vitamin B12 plays a major role in red blood cell health and nervous system function
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