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A 2003 J Natl Cancer Inst paper by Cha et al
i absolutely refer you to anyone looking for B12 therapy
A 1989 study measured serum ferritin levels of high school cross country runners, and found that 34 percent of female runners and 8 percent of male runners had ferritin levels below 12 ng/mL, which we know is really low so imagine all the other runners who may have had suboptimal levels
Home Vitamin B12 is a powerhouse nutrient, vital for everything from producing red blood cells to maintaining healthy nerve function and keeping your energy levels stable
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