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If you eat more potassium-rich foods and less salty food, your blood pressure might drop by a few points—and most of that drop probably comes from eating more potassium, not less salt.

Evidence from Studies

Supporting (1)

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The contribution of sodium reduction and potassium increase to the blood pressure lowering observed in the Salt Substitute and Stroke Study

Computational/Algorithm Study
2024 Apr

This study used a special salt with more potassium and less sodium, and found that blood pressure dropped by 3.3 mmHg — just like the claim said. Most of that drop (over 60%) was because of the extra potassium, not the less sodium, which is exactly what the claim claimed.

Contradicting (0)

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No contradicting evidence found

Gold Standard Evidence Needed

According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.

Source Study

The contribution of sodium reduction and potassium increase to the blood pressure lowering observed in the Salt Substitute and Stroke Study

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DOI: 10.1038/s41371-024-00896-4

Similar Assertions

If you eat more potassium-rich foods and less salty food, your blood pressure might drop by about 3.3 mmHg—and most of that drop probably comes from eating more potassium, not less salt.

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97%

If people eat less salt and more potassium-rich salt, the extra potassium might lower their blood pressure more than cutting back on salt alone — and most of that drop seems to come from the potassium.

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97%

If adults with high blood pressure eat more potassium-rich foods—like bananas or spinach—by about 50 mmol per day, their blood pressure numbers go down a bit, which might help lower their risk of heart problems.

55
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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.

48
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85%

Cutting back on salt in your diet lowers your blood pressure—on average, by about 4 points for the top number and 2 points for the bottom number.

73
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83%