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How Vitamin B12 Affects Brain Chemistry and Stress Systems Neurotransmitter production B12, together with folate and B6, is essential for the methylation reactions that produce serotonin, dopamine, norepinephrine, and GABA the neurotransmitters most directly involved in regulating mood, motivation, calm, and emotional stability
It is difficult to discriminate the influence between the clearance and treatment effect, and further, the change in microbiome composition is mostly significant only in treated subjects who remain infected after the treatment (Martin et al., 2018
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