Is vitamin B12 good for runners?

This question is about Running

Natalie Rizzo, MS, RD, Freelance Writer

Vitamin B12 is good for runners, as it plays a role in energy production, glucose uptake, red blood cell formation, DNA synthesis and central nervous system function. It is also used to keep the body’s nerves healthy, as well as prevent tiredness and weakness [


]. If runners are deficient in vitamin B12, they may experience extreme tiredness, lack of energy, and weak muscles.

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  1. U.S. Department of Health and Human Services. (n.d.). Office of dietary supplements - vitamin b12. NIH Office of Dietary Supplements. Retrieved September 20, 2021, from