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Can low calcium intake cause high blood pressure?

Dariush Mozaffarian, MD
Internal Medicine
Some research suggests a low calcium intake may contribute to high blood pressure, but calcium's exact role in hypertension is unknown. One theory holds that a lack of calcium in the diet predisposes your body to retain sodium, which raises blood pressure. For this reason, it may be especially important that people with hypertension get enough calcium. On the other hand, in randomized controlled trials, calcium supplements have very small effects on blood pressure. Eating a healthy diet, consuming potassium from foods, and lowering salt in your diet are the best dietary approaches to reduce your blood pressure.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.