Eating carrageenan, a common food additive, might make your gut leakier, letting harmful stuff from your intestines escape into your bloodstream and cause long-term swelling in your body.

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Evidence from Studies

Supporting (1)

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Carrageenan and insulin resistance in humans: a randomised double-blind cross-over trial

Randomized Controlled Trial

Human

2024 Nov 26

This study gave people a common food additive called carrageenan and found it made their gut more 'leaky,' letting harmful stuff escape into the bloodstream and cause inflammation—exactly what the claim says.

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 young, non-obese men take 500 mg of carrageenan every day for two weeks, their gut might become more leaky, which you can tell by higher levels of certain substances in their urine and blood.

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Eating carrageenan — a common food additive — doesn’t change the types of bacteria in the gut of healthy young men after two weeks.

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Eating carrageenan — a common food additive — doesn’t seem to change how well the body uses insulin or cause brain swelling in healthy, slim young men after two weeks, even though it might make their gut leakier and trigger their immune system a bit.

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