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The key difference may be that endurance athletes more acutely feel the effects of suboptimal B12 levels during long training sessions
Biol Trace Elem Res 161(3):308317 Huang K, Yang S (2002) Inhibitory effect of selenium on Cryptosporidium parvum infection in vitro and in vivo
Mental Impairment Low B12 levels can worsen mental function, especially in older adults
15mg 10 vials at $370
Reeves R, Luks EL
Free radicals are unstable molecules produced during normal metabolic processes
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