Is Magnesium good for cardiovascular health?

The evidence points that way, though it's not yet conclusive. Multiple independent meta-analyses of randomized trials, spanning from 2002 to 2025, consistently find magnesium supplementation produces a small but real reduction in blood pressure, with effects present across general and diabetic populations. That's reflected in an evidence score of 62/100 for its role in cardiovascular health, drawn from 10 studies, with an estimated impact on longevity rated moderate (38/100).