Serum Magnesium and the Risk of Death From Coronary Heart Disease and Sudden Cardiac Death.

40 A meta‐analysis on the association between low serum magnesium and fatal CHD, which included the 2 studies discussed above, 11 , 14 found a nonsignificant trend towards an increased risk. 9 However, this meta‐analysis also included 2 studies with SCD as outcome of interest which, judging from the Forest plot, were mainly responsible for this observed inverse effect. 2 We analyzed SCD independently of CHD and found a significantly elevated risk for SCD in participants with low serum magnesium levels.

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A marginally insignificant association was found with high serum magnesium levels and SCD (HR 1.35, 95% CI 0.96–1.89).

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