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What are the symptoms of vitamin B12 deficiency?

Male  59 years old 2018-05-29
Recently, I had some insomnia and went for a trace element test. The doctor said that it was caused by vitamin B12. In addition, what other symptoms can be caused by lack of vitamin B12?

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  • BY Penelope Judson 2018-05-29
    Lack of vitamin B12 will cause brain damage, and due to brain damage, patients may have mental symptoms such as emotional instability, such as easy to catch fire in small things, indifferent to people, things like insomnia, suspiciousness, depression, mental retardation and even dementia, etc. .
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