Is Inulin bad for you?
Also listed as: chicory root fibre, chicory fibre, fructooligosaccharides, FOS
Short answer
A generally safe, prebiotic fibre that can support gut bacteria, but larger amounts often cause gas and bloating, and it can make a product’s fibre number look better than its overall quality.
What it is
A type of soluble fibre found naturally in chicory root, onions, garlic and bananas. Manufacturers add it to raise fibre and add a little sweetness.
Where you’ll see it
Protein bars, ‘high fibre’ biscuits and cereals, yoghurts, low-sugar snacks and fibre supplements.
+ The good side
- Counts as dietary fibre
- Acts as a prebiotic, feeding beneficial gut bacteria
- Has little effect on blood sugar
− The other side
- Can cause gas, bloating and discomfort, especially in larger amounts
- Often a trigger for people with IBS following a low-FODMAP diet
- Can make a processed snack look healthier on paper
Who should pay attention
People with IBS or sensitive digestion, and anyone comparing fibre claims.
💡 What to do: Fibre from whole grains, dals, fruit and vegetables comes with more nutrients. Treat added inulin as a bonus, not the reason to buy.
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‘High protein’
Regulations set a minimum protein level for the claim, but ‘high protein’ per 100 g can mean much less in the serving you actually eat, and sometimes comes with a lot of sugar or fat.
‘Multigrain’
Multigrain only means more than one grain is used. It doesn’t mean whole grain, and many multigrain breads and biscuits are mostly refined flour.
Related guides
General food information, not medical advice. Exact limits and labelling rules vary by country. If you have a medical condition or allergy, follow your doctor’s or dietitian’s advice.