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Vitamin B12 deficiency is more common in specific demographics, including: Older adults Individuals with certain medical conditions Those following vegetarian or vegan diets Globally, the prevalence of vitamin B12 deficiency anemia is estimated to be around 2%
It also leads to an improved performance
Individuals receiving therapeutic B12 injections or taking high-dose oral supplements without medical supervision face the greatest risk of very high levels
If you experience side effects from B12 injections, ask about switching to oral doses instead
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