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B12 plays many important roles in the human body, including: Nerve function Brain health Red blood cell production DNA synthesis Energy production Some people simply do not get enough Vitamin B12 in their diet to meet the bodys demands, while others have difficulty absorbing it
Overdoing it, especially through improper supplementation or injections, can lead to unwanted risks
Important: Patients with Leber hereditary optic neuropathy should not take methyl B12 shots
Health groups also say some seniors might need more Vitamin B12
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