They want to get their hands on any advantage in performance an athlete can access
We all have 2 MTHFR genes, one inherited from each parent
10.1104/pp.103.035956 141 VadasseryJ.TripathiS.PrasadR.VarmaA.OelmllerR
Deisseroth, A, Kavanagh J, Hanania G, Fu S, Kornblau SM, Estey E, Talpaz M, Kantarjian HM, Claxton DF, Reading CL, Dixon DA, Anderson RW, Lopez-Berestein L, Holmes FA, Logothetis C, Andreeff M , Benedict W
This can build up over time, but multiple sessions may have to be done
Antimelanogenic activity of hydrocoumarins in cultured normal human melanocytes by stimulating intracellular glutathione synthesis