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While plant-based eating offers significant health benefits, B12 deficiency is a legitimate concern that supplements alone may not resolve
Full benefits may take longer as the body rebuilds healthy red blood cells and restores nerve function
The methodological quality of the included studies, as assessed through the Jadad and NewcastleOttawa scales, varied from moderate to high, while the GRADE assessment indicated moderate certainty of evidence for serum vitamin B12 increase and low certainty for homocysteine reduction
How soon should improvements be noticeable after starting B12 injections for chronic fatigue
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