Common examples include fatigue or low energy with normal blood results, brain fog or reduced concentration without confirmed vitamin B12 deficiency, stress-related exhaustion or burnout, increased metabolic demand such as during illness recovery, high workload, or intense training, restrictive or inconsistent dietary intake, or suspected poor oral absorption despite normal serum levels
If you're deep into a Reta protocol and your overall weight is moving but the midsection stubborn fat isn't shifting, this is a reasonable addition to explore
Oral vitamin B 12 versus intramuscular vitamin B 12 for vitamin B 12 deficiency 22 Background: Vitamin B 12 deficiency is common, and the incidence increases with age
People with vitamin B12 deficiency may feel tired and lethargic and have decreased physical energy
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