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Some people recommend avoiding excess fiber, or trying not to combine your vitamin B12 with tannins, alcohol, or high levels of zinc as means to boost absorption
The result is sustained elevation of endogenous neurotransmitters rather than a pharmacologically induced surge
Travel fatigue can result from a combination of factors, including jet lag, dehydration, and disrupted sleep
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High levels could mean a pernicious anemia diagnosis
Seki T et al
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