Myths vs facts: Magnesium and Müdigkeit

Magnesium is often marketed as a cure for fatigue, but the scientific evidence is nuanced. Deficiency can indeed cause tiredness, muscle cramps, and weakness – especially in risk groups like the elderly, athletes, or those with gastrointestinal disorders. However, true magnesium deficiency is rare in the general population. Many people who feel tired have normal magnesium levels, and supplementation then offers no measurable benefit. High doses can even cause diarrhea or other side effects. MyBody-X may offer magnesium testing, but interpretation is tricky: serum magnesium does not reflect total body stores. A single blood test is insufficient to diagnose deficiency. Anyone with persistent fatigue should consider other causes (iron deficiency, thyroid issues, sleep quality) and consult a doctor. Bottom line: magnesium can help if a deficiency is confirmed, but it is not a universal remedy for fatigue. Marketing claims often exaggerate its effects.