Chicory inulin (prebiotic fibre)
It feeds the bacteria you already have — instead of adding new ones. But it causes bloating.
The short version
What it does It feeds the colon bacteria, which make useful compounds from it.
What it does not do It is also one of the least well tolerated fibres: if you bloat, it will make it worse. Thirty plants a week do the same job, for free.
What the studies say
Slavin’s reference framework on prebiotic fibres describes the mechanisms: inulin is fermented by colon bacteria, which produce short-chain fatty acids. The American Gut data, the origin of the thirty-plants-a-week rule, is observational.
It is precisely that fermentation that produces the gas: inulin is one of the least well tolerated fibres, and it is explicitly advised against on low-FODMAP diets. Clinical data on a measurable health benefit remains thin.
A plausible mechanism, weak demonstration, mediocre tolerance. We keep it for one specific case and demote it as soon as someone reports bloating.
How to take it
Relevant if your diet is low in plants and you tolerate fibre well. Clearly inadvisable if you bloat, if you have irritable bowel syndrome, or if you follow a low-FODMAP diet.
Start very low — 2 g — and build up over three weeks to 5 to 10 g maximum. With a meal.
The gas in the first days is expected and often passes. If it has not passed in two weeks, stop: it is not a question of adapting, it simply does not suit you.
What is inside
Inulin usually from chicory root, or from agave. Chain length changes tolerance: long chains ferment further down the colon and are often better tolerated.
A long-chain chicory inulin is the most comfortable choice. Thirty different plants a week do the same job, for less money and with no powder.
Prebiotic blends stacking inulin, FOS and GOS at high doses: that is the recipe for guaranteed discomfort.
Cautions
- Irritable bowel syndrome: often poorly tolerated
- Bloating is common when starting
The three options
Long-chain chicory
Long chain: less bloating
100 % pure, from chicory. It ferments more slowly in the colon, which is the only distinction that matters in this aisle. The numerical degree of polymerisation is stated nowhere on Amazon.
For whom — Anyone who tolerates fermentable fibre badly but wants to try.
Chicory inulin
From chicory, not from agave
Several “organic inulins” in this aisle are actually agave without saying so clearly. 1.5 kg, laboratory tested. Build the dose up very gradually: it is the fibre that bloats most when you go too fast.
For whom — A diet low in plants, good digestive tolerance.
Thirty plants a week
Nothing to buy
Count the plant species in your week, not the portions. Thirty different ones do more for your flora than one isolated fibre.
For whom — Everyone — and it works better than the powder.
Nothing to buy here — the text above explains why.
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