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correlational
Analysis v1
Strong Support

People who pee out more salt tend to have higher blood pressure, and this pattern shows up in lots of different groups of people around the world.

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Against

Evidence from Studies

Supporting (3)

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Community contributions welcome

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The Correlation Between Urinary Sodium Excretion and Blood Pressure in Hospitalized Adult Patients with Hypertension

Cross-Sectional Study
Human
2021 May

This study found that people with higher salt in their urine also had higher blood pressure, which matches the claim that more salt excretion is linked to higher blood pressure.

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Intersalt: an international study of electrolyte excretion and blood pressure. Results for 24 hour urinary sodium and potassium excretion. Intersalt Cooperative Research Group.

Cross-Sectional Study
Human
1988 Jul 30

Scientists measured how much salt people pee out and checked their blood pressure — they found that people who pee out more salt tend to have higher blood pressure, especially as they get older, across many different countries.

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Study on the Correlation between Urinary Sodium and Potassium Excretion and Blood Pressure in Adult Hypertensive Inpatients of Different Sexes

Cross-Sectional Study
Human
2022

This study found that people who excrete more sodium in their urine tend to have higher blood pressure, which matches the claim. It looked at men and women with high blood pressure and saw the same pattern in both.

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.

Similar Assertions

If you have heart disease and eat more salt, your blood pressure tends to go up — for every extra gram of salt you excrete in urine, your top blood pressure number goes up by about 1.3 points and your bottom number by about 0.5 points.

0
0
86%

When people pee out more salt than potassium, their blood pressure tends to be higher — it’s like the balance between salt and potassium in your urine tells you something about your blood pressure.

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0
86%

For healthy young people, eating more or less salt doesn’t seem to make their blood pressure bounce around more or less — their blood pressure stays steady no matter how much sodium they pee out.

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0
85%

People who pee out more salt tend to have higher blood pressure, and their blood pressure tends to rise faster as they get older—but in whole populations, the average blood pressure and how many people have high blood pressure don’t seem to change based on salt levels.

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0
84%

Even though people urinate out more salt after drinking this mineral water, their blood pressure doesn’t go up — meaning the body’s salt removal system works fine without raising BP.

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0
80%

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