A 2024 study published in the Proceedings of the Nutrition Society found deficiency prevalence ranges from 5 to 52% in vegans and 6 to 14% in vegetarians, depending on supplement use
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While B12 injections are generally safe, side effects like redness, swelling, or pain can occur
Energy The research is limited and far from a slam dunk but Cowling says higher doses of B 12 supplementation may increase energy, particularly if you have a deficiency or are at risk of a deficiency
This is when the body cant make red blood cells due to an inadequate supply of B12
However, if you experience any severe or persistent side effects, its crucial to seek medical attention immediately