welche vitamine fehlen bei müdigkeit — what does this mean exactly?

The GSTM1 null variant means you lack a functional GSTM1 enzyme, which is important for detoxifying reactive oxygen species and certain environmental toxins. Evidence is mainly observational, linking it to oxidative stress and cancer risk, not directly to stress recovery or athletic performance. The effect on stress handling is modest and modifiable by diet. For fatigue, common vitamin deficiencies include B12, D, iron, and folate, but a single genetic variant like GSTM1 null does not diagnose these. MyBody-X DNA tests show predispositions, not current levels. Caveat: clinical significance is limited; a blood test is needed for actual deficiency. A diet rich in antioxidants (e.g., cruciferous vegetables) may help compensate.