More Potassium Lowers Blood Pressure in Adults with High BP
Effect of increased potassium intake on cardiovascular risk factors and disease: systematic review and meta-analyses
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Surprising Findings
Potassium doesn’t lower blood pressure in people with normal BP — only in those with hypertension.
Most public health messaging treats potassium as a universal blood pressure reducer, but this meta-analysis shows it’s selective — challenging decades of oversimplified advice.
Practical Takeaways
If you have high blood pressure, aim for 90–120 mmol/day of potassium through foods like bananas, spinach, sweet potatoes, beans, and avocados.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Surprising Findings
Potassium doesn’t lower blood pressure in people with normal BP — only in those with hypertension.
Most public health messaging treats potassium as a universal blood pressure reducer, but this meta-analysis shows it’s selective — challenging decades of oversimplified advice.
Practical Takeaways
If you have high blood pressure, aim for 90–120 mmol/day of potassium through foods like bananas, spinach, sweet potatoes, beans, and avocados.
Publication
Journal
The BMJ
Year
2013
Authors
Nancy J. Aburto, Sarah Hanson, H. Gutierrez, L. Hooper, P. Elliott, F. Cappuccio
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Claims (6)
Eating more potassium-rich foods like bananas and spinach can help lower your blood pressure and make it less likely you'll have a stroke or heart problem—especially if you're eating a lot of salty foods.
People who eat more potassium-rich foods like bananas and spinach tend to have a 24% lower chance of having a stroke for the first time, but we can’t say for sure that potassium is the reason why.
Eating the right amount of potassium—between 90 and 120 millimoles a day—seems to lower your blood pressure the most and cut your risk of stroke the most; eating more than that doesn’t help any further.
Eating more potassium can lower blood pressure in people who already have high blood pressure, but it doesn’t help people with normal blood pressure — so it’s like a targeted fix just for those who need it.
Eating more potassium-rich foods won’t hurt your heart health by messing with your cholesterol, stress hormones, or kidney function — so it’s probably safe if you’re trying to lower your risk of heart problems.