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[9] Visual disturbances have been reported in patients with Leber hereditary optic neuropathy, and rapid B12 administration may precipitate optic nerve atrophy in this genetically predisposed population, mandating extreme caution or alternative therapy
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The right level of B12 or the administration of vitamin B12 shots supports healthy brain function, helping to improve focus, memory, and cognitive processing
Vegetarians and vegans who lack dietary sources of B12
No trials specifically enrolled elderly individuals, those with significant cardiovascular disease, individuals with active cancer, or pregnant/breastfeeding women
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