Study Links Low Magnesium Intake to Heart Disease Risks in Women

Overview of the Study’s Findings

A recent study has revealed a connection between low dietary magnesium intake and an increased risk of fatal coronary heart disease and sudden cardiac death. Among various demographics, postmenopausal women exhibit the highest prevalence of cardiovascular disease. However, the specific risk factors contributing to coronary heart disease and sudden cardiac death in women remain inadequately understood.

The Importance of Magnesium in Heart Health

Magnesium is essential for the proper functioning of heart cells. Insufficient magnesium levels have been linked to arrhythmia, an irregular heartbeat. Despite recognizing magnesium’s critical role in cardiac function, previous research on its effects on cardiovascular health has produced inconclusive results.

Details of the Recent U.S. Study

In a new U.S. study, researchers examined the relationship between magnesium intake and the risk of coronary heart disease and sudden cardiac death. The study involved 153,569 postmenopausal women aged 50 to 79 years. Participants completed a food-frequency questionnaire at the study’s outset, providing insights into their dietary habits over the previous three months. The researchers evaluated occurrences of fatal coronary heart disease and sudden cardiac death approximately ten and a half years later. The findings were published in the *Journal of Women’s Health*.

Key Findings from the Research

The research indicated that women with higher magnesium intake had a lower risk of fatal coronary heart disease. In contrast, those with the lowest magnesium consumption faced a heightened risk of developing this condition. Furthermore, participants with low magnesium intake had a 22% increased risk of sudden cardiac death.

Implications for Future Research

The authors of the study emphasize the need for additional research to confirm these findings and explore whether magnesium supplementation could mitigate these health risks. While magnesium supplements are not currently recommended, the study suggests that adhering to the recommended dietary intake of magnesium might be crucial for maintaining heart health.

Current Dietary Recommendations

Current guidelines suggest that healthy adults should aim for a daily intake of magnesium ranging from 310 to 400 mg, depending on age and gender. Foods rich in magnesium include legumes, nuts, seeds, fish, and whole grains.

About the Author

Written by Laura Laroche, HBASc, Medical Writer.

References

Li, Jason, et al. “Association of Dietary Magnesium Intake with Fatal Coronary Heart Disease and Sudden Cardiac Death.” *Journal of Women’s Health*, 2019.
Could higher magnesium intake reduce fatal coronary heart disease risk in women? 2019, https://www.eurekalert.org/pub_releases/2019-12/mali-chm122319.php, assessed Dec 26th, 2019.
Image by Gerd Altmann from Pixabay.