other · for high blood pressure
Prebiotic Fiber (Inulin/FOS)
What gut bacteria make from it may act on receptors that widen blood vessels.
Say that in clinical terms
Short-chain fatty acids from fermentation may activate blood-pressure-regulating receptors in blood vessels and kidneys, promoting vasodilation — a mechanism shown in animal and small human studies, not established at scale.
How strong is the research?
No Benefit evidence
Pooling 5 trials, neither the top nor the bottom blood pressure number moved significantly.
Low-quality evidence
2 papers read, 1 against.
Tested as: 10–15 g/day inulin, from 3 weeks to several months
How much to take
10–15 g