A deficiency can also cause a condition called megaloblastic anemia which creates larger, immature, and abnormal red blood cells and leads to impaired DNA synthesis
Tax benefits with an HSA may be administered that way but there are also other options
These proteins tell your immune system to attack intrinsic factor
Folic Acid, vitamin B9 is not a substitute for methylcobalamin, vitamin B12 deficiency, although it may improve vitamin B12 megaloblastic anemia
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Your body doesn't make B12 on its own, you get it from animal foods (meat, fish, eggs, dairy) or from supplementation