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Medically Reviewed on 6/10/2026 Harvard T
healthy red blood cell formation
Higher doses and more frequent shots may be needed for recovery
doi: 10.3904/kjim.1993.8.1.8 Summary Keywords vitamin B12, testosterone, reproductive health, NHANES, BMI Citation Zhao X, Lyu X, Wang H, Li Y, Peng F and Zhang Y (2025) Gender-specific negative association between serum vitamin B12 and testosterone levels in females: the modifying role of BMI in a US adult population
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