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If left untreated, vitamin B12 deficiency can lead to anemia, nerve damage and more, warns Taylor
Deciding if a peptide is right for your research goals involves looking at your unique health profile
The tradeoff
Conditions like celiac or Crohn's disease can impair B12 absorption
Paradoxically, the symptom affects people who are actually being treated for a shortage of the vitamin
Subcutaneous injections can be less painful and easier to do yourself
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