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Unfortunately, if your body is not methylating efficiently, due to a genetic mutation in the MTHFR gene, disease, chronic stress, or nutritional deficiency, you are likely not only lacking L-methylfolate, but also L-glutathione

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10.4292/wjgpt.v11.i5.93 13 Berra-RomaniR.Avelino-CruzJ

Journal of Investigative Dermatology (1999) 10
You can find more details at resources like 2025 ICD-10-CM Codes M54*: Dorsalgia