Risks and limits of Magnesium Alltag

Daily magnesium supplementation is generally safe for most people, but it has risks and limits. Common side effects include diarrhea, nausea, and abdominal cramps, especially with high doses of magnesium citrate or oxide. Individuals with impaired kidney function should only take magnesium under medical supervision because accumulation can lead to dangerous cardiac arrhythmias. Interactions with certain medications (e.g., antibiotics, bisphosphonates) are also possible. The recommended daily allowance for adults is about 300–400 mg, and dietary intake often suffices. A blood test for magnesium levels is more informative than a DNA test, as genetic variants (e.g., in the TRPM6 gene) rarely justify supplementation. Evidence for broad population use is moderate; deficiency is uncommon with a balanced diet. Caution against excessive dosing: the safe upper limit from supplements is about 250 mg per day in addition to food. When in doubt, consult a physician.