When healthy guys eat a diet high in carbs for a couple of weeks, their bodies initially hold onto more salt—but by week two, a key hormone that controls salt goes down, which might help stop blood pressure from rising.

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Evidence from Studies

Supporting (1)

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Community contributions welcome

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High-carbohydrate diet: antinatriuretic and blood pressure response in normal men.

Cross-Sectional Study

Human

1986 Sep

The study found that while eating lots of carbs causes the body to hold onto sodium at first, it quickly balances things out by lowering a hormone called aldosterone, which helps prevent long-term water retention and high blood pressure.

Contradicting (0)

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No contradicting evidence found

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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

High-carbohydrate diet: antinatriuretic and blood pressure response in normal men.

Score: 25

DOI: 10.1093/AJCN/44.3.341

Similar Assertions

Eating a lot of carbs might make your body hold onto more salt, which could raise your blood pressure.

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When healthy guys eat more carbs for a few days, their bodies hold onto more salt at first, but this doesn’t last past the first week.

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When mice eat a lot of salt, adding a moderate amount of potassium lowers their blood pressure by about 3.6 mmHg compared to eating the same high salt without extra potassium.

13

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Eating a lot of carbs for two weeks doesn’t raise blood pressure in healthy guys, even though it changes how their bodies handle salt.

25

0

75%