Can Magnesium help with longevity?

Whether magnesium can extend lifespan is not clearly supported by current evidence. Magnesium is an essential mineral involved in over 300 enzymatic reactions, including DNA repair, inflammation control, and mitochondrial function—all processes linked to aging. Observational studies associate low magnesium levels with increased risk of cardiovascular disease, type 2 diabetes, and oxidative stress, which could indirectly affect longevity. However, randomized controlled trials in humans demonstrating a direct extension of maximum lifespan through magnesium supplementation are lacking. Evidence is mostly from cell culture, animal models, and epidemiological data. Moreover, excessive intake (e.g., >350 mg/day from supplements) can cause diarrhea, arrhythmias, and dangerous hypermagnesemia in kidney disease. For evidence-based longevity, a balanced diet, exercise, and stress management outweigh isolated micronutrients. MyBody-X DNA tests can flag variants in magnesium-related genes (e.g., TRPM6), but clinical relevance for longevity is minimal. Conclusion: magnesium is vital, but significant lifespan extension via supplements is unproven.