What to watch with Magnesium and longevity?

Magnesium is an essential mineral involved in over 300 enzymatic reactions, including DNA repair, mitochondrial function, and inflammation regulation—all processes linked to aging. Some observational studies suggest an association between low magnesium levels and accelerated biological aging as well as increased mortality. However, the evidence for a direct life-extending effect of magnesium supplementation in humans is limited. Key cautions: Magnesium supplements can interact with certain medications (e.g., diuretics, proton pump inhibitors, antibiotics). Caution is needed in kidney disease, as overdose can cause dangerous arrhythmias. Also, standard blood tests measure only serum magnesium, which reflects about 1% of total body stores; deficiency can exist despite normal serum levels. Genetic variants (e.g., in the TRPM6 gene) can affect magnesium absorption but are rarely clinically relevant. For longevity, maintaining a balanced magnesium status is sensible, but it is not a panacea. A varied diet rich in whole grains, nuts, seeds, and leafy greens is the safest approach. Supplements should be taken only if needed and ideally under medical guidance.