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Vitamin D assists patients who spend long hours indoors
[3] [6] If no reversible cause is found, or when found it cannot be eliminated, lifelong vitamin B 12 administration is usually recommended
This leads to increased stamina, reduced tiredness, and enhanced overall well-being
Typically, people are not considered B-12 deficient until levels go below 200 pg/mL, although older adults may have symptoms of deficiency at blood levels of 200 to 500 pg/mL (CDC, 2012)
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