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Its essential for the production of red blood cells, DNA synthesis, and maintaining a healthy nervous system
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Symptoms of B12 deficiency include exhaustion no matter how much you sleep, muscle weakness and frequent cramping, constipation, loss of appetite and unexplained weight loss, numbness or tingling in the hands and feet, depression, and problems with memory and focus
Older people tend to have lower amounts of stomach acid, which the body needs to absorb B12
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