b12 injections and grey hair Premature Graying Vitamin Deficiency Association 5 weeks after starting b12
Description
Neurological manifestations include persistent brain fog , memory loss , and difficulty concentrating that significantly impacts professional and personal performance

Possible side effects include injection site pain or redness, mild diarrhea, nausea, itching, headache, or dizziness

Many people start with levels well above the minimum threshold

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