If you have a higher body weight (BMI 27 or more), taking a common food additive called carrageenan for two weeks might make your body less responsive to insulin — and this effect is stronger the more body fat you have, compared to not taking it.

66

Pro

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Against

Evidence from Studies

Supporting (1)

66

Community contributions welcome

66

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

Randomized Controlled Trial

Human

2024 Nov 26

The study found that in people who are overweight, taking carrageenan for two weeks made their bodies less able to respond to insulin — but only in those with higher body weight, just like the claim says.

Contradicting (0)

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

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

Score: 66

DOI: 10.1186/s12916-024-03771-8

Similar Assertions

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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66

80%

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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66

70%