What role does Magnesium play in Müdigkeit?

Magnesium is an essential mineral involved in over 300 enzymatic reactions, including ATP synthesis, muscle contraction, and nerve transmission. Low magnesium levels are associated with fatigue, muscle weakness, and sleep disturbances. However, the provided context does not directly address magnesium's role in fatigue; it focuses on DNA tests and sleep biomarkers. While magnesium supplementation may benefit individuals with deficiency, evidence for its effect on fatigue in non-deficient individuals is mixed. A blood test (e.g., serum magnesium) can identify deficiency, but routine testing is not always recommended. The context mentions that blood tests can measure nutrients, but does not specify magnesium. Therefore, the role of magnesium in fatigue is mechanistically plausible but not strongly evidenced from the given material. For persistent fatigue, a medical evaluation including iron, vitamin D, B12, and thyroid function is more established. Caveat: Do not self-supplement high doses without testing; magnesium can interact with medications.