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Additionally making sure your health issues are caused by b12 and not folate is also an important distinction to make
Because that figure comes from rodent research, many start patients at the low end (about 5 mcg/kg or a flat 250 mcg) and adjust over one to two weeks
[6] [65] Since there are few non-animal sources of the vitamin, vegans are advised to consume a dietary supplement or fortified foods for B 12 intake, or risk serious health consequences
When B12 levels fall below normal ranges, the bone marrow produces abnormally large, immature red blood cells called megaloblasts, which cannot function effectively to transport oxygen throughout the body
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