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Methylcobalamin is best, unless you suffer from Lebers hereditary optic neuropathy (1 in 30,000 to 50,000 people), where hydroxy B12 is safer
Your body uses it to turn food into usable energy, to build healthy red blood cells, and to keep your nerves and DNA in good working order
Vitamin B 12 from foods appear to have different absorption rates with better absorption from chicken and beef as compared to eggs
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