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Peripheral Neuropathy TreatmentMadison, WI Pro Spine & Pain Parasympathetic and Sympathetic Nervous System Dysfunction and Monitoring Springer Nature Link Tightness in the throat and chest can occur with B12 deficiency and it is commonly mislabelled as anxiety. The mechanism is neurological and autonomic, not psychological. Here is the clear biology you Vitamin B12 PMC How Vitamin B12 Supports Nerve Function and Brain Health
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