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PMC 5178091
Wrapping Up: Finding What's Right for You Ultimately, the decision between B12 injections and oral supplements should be based on individual health requirements, personal preferences, and advice from a healthcare professional
In the United States, 3-6% of the population are vitamin B12 deficient and 15-20% have marginally depleted levels
doi:10.1002/mnfr.201500019
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