descriptive
Strong Support
In older male rats, the protective barrier in a brain area that controls blood pressure gets leaky and causes brain inflammation, but this gets fixed after six weeks of eating more fiber. This might explain how gut health affects blood pressure. This finding is from the abstract summary - full study details were not available.
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Evidence from Studies
Supporting (1)
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Community contributions welcome
9
The study found that older rats on a high-fiber diet had healthier brain barriers and less brain inflammation, which was linked to lower blood pressure—just like 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.