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During digestion, vitamin B12 is usually removed from protein and then sent straight into the bloodstream
Knowing the early signs and symptoms of a deficiency in this vitamin can help you seek timely treatment and prevent long-term damage
doi:10.3945/ajcn.116.148585
At the same time, glycine is also an obligatory co-agonist at N-methyl-D-aspartate (NMDA) receptors, a type of excitatory glutamate receptor in the brain
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