Chicory Root (Cichorium intybus): Uses, Evidence and Safety
Chicory root (Cichorium intybus) and its inulin fiber: what trials and meta-analyses found for constipation, how gas and bloating can limit use, and reported allergy to chicory.
Content last updated . This page has not been medically reviewed.
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What is Chicory root good for?
What the body uses it for, and how strong the evidence is. A normal job in the body is not proof that extra supplements add benefit; each card says which.
Stool frequency and softness (chicory inulin)
Clinically supportedChicory inulin, a fermentable fiber, increased stool frequency and softened stools in people with constipation in trials and a small meta-analysis.
Supplements: Results are for purified inulin in people with constipation, small trials; they do not carry over to roasted root, tea or tincture.
Bowel function with dried whole root
Preliminary or mixedIn one randomized trial of 55 adults at risk of type 2 diabetes, dried chicory root increased stool softness and frequency.
Supplements: One trial, not in people with constipation; authors disclosed links to the supplier.
Gut bacteria and short-chain fatty acids
Preliminary or mixedIn the same trial, dried root raised Bifidobacterium and Anaerostipes and increased short-chain fatty acids in stool.
Supplements: Changes in bacteria and lab markers are not proof of a health benefit.
Blood sugar markers
Preliminary or mixedThe dried-root trial reported lower day-to-day glucose variability; fasting glucose fell only in a subgroup.
Supplements: One small trial with biomarker outcomes only; not shown to prevent or treat diabetes.
Pain and bloating
Not enough evidenceThe meta-analysis found that pain and bloating did not improve with inulin.
Supplements: No evidence of benefit for pain or bloating.
Traditional use
Not enough evidenceThe site page found no source describing a specific traditional use, so none is described here.
Supplements: Not assessed.
Weight, liver and 'cleansing' claims
Not enough evidenceNo source we read supports claims for weight loss, liver health or detox.
Supplements: No evidence found.
Connected topics
Open a group to see how each topic connects and how strong the evidence is.
Health goals (2)
- Digestive SupportClinically supported
Chicory inulin raised stool frequency in people with constipation in small trials and a meta-analysis; this applies to inulin, not every chicory product.
- Gut HealthClinically supported
Chicory inulin raised stool frequency in people with constipation in small trials and a meta-analysis; this applies to inulin, not every chicory product.
Body systems (4)
- Digestive SystemClinically supported
Chicory inulin raised stool frequency in people with constipation in small trials and a meta-analysis; this applies to inulin, not every chicory product.
- Gut HealthClinically supported
Chicory inulin raised stool frequency in people with constipation in small trials and a meta-analysis; this applies to inulin, not every chicory product.
- Immune SystemDocumented risk
Chicory can trigger allergy in some people, including those allergic to birch pollen; published cases only.
- Respiratory SystemDocumented risk
Inhaled dry chicory root dust caused asthma in one factory worker; a single case.
Body parts (5)
- GutClinically supported
Chicory inulin raised stool frequency in people with constipation in small trials and a meta-analysis; this applies to inulin, not every chicory product.
- ColonPreliminary or mixed
The fiber is fermented by bacteria in the large bowel, and stools became softer and more frequent in trials.
- Immune SystemDocumented risk
Allergy to chicory, with birch pollen cross-reactivity, is described in case reports.
- Large IntestinePreliminary or mixed
The fiber is fermented by bacteria in the large bowel, and stools became softer and more frequent in trials.
- LungsDocumented risk
Asthma from inhaled chicory root dust was reported in one worker.
Functional actions (1)
- Digestive SupportClinically supported
Chicory inulin raised stool frequency in people with constipation in small trials and a meta-analysis; this applies to inulin, not every chicory product.
Root causes (1)
- Digestive DysfunctionClinically supported
Chicory inulin eased low stool frequency in constipation trials; it does not treat other digestive problems.
Conditions & symptoms (6)
- Chronic ConstipationClinically supported
A 2014 meta-analysis of 5 trials (252 people) found better stool frequency with inulin; pain and bloating did not improve.
- ConstipationClinically supported
Chicory inulin raised stool frequency in small trials and a meta-analysis; a guideline review names it among the best-studied options. Results are for inulin.
- FlatulenceDocumented risk
Inulin-type fibers can cause bloating, gas and rumbling, especially in larger amounts.
- AsthmaDocumented risk
One chicory factory worker developed asthma from dry root dust.
- Food AllergyDocumented risk
Case reports describe immediate-type allergy to chicory, including oral allergy syndrome with birch pollen allergy.
- RhinoconjunctivitisDocumented risk
The same worker had nose and eye symptoms from chicory dust.
Documented risks and interactions (3)
- Gas, bloating and rumbling (tolerance). A review of 103 trials counted bloating, flatulence and rumbling as tolerance effects of nondigestible carbohydrates, including inulin; tolerance differs by fiber type.
- Allergy and birch pollen cross-reactivity. Published cases describe oral allergy symptoms to chicory in people with birch pollen allergy, and reactions after eating, touching or inhaling chicory in a vegetable wholesaler who also reacted to endive and lettuce.
- Occupational dust asthma. A worker in a chicory inulin factory developed nose and eye symptoms and asthma from dry chicory root dust.
Two things to know first. Chicory root is mostly studied as a fiber source (inulin), and fiber of this kind can cause gas and bloating if too much is eaten; one review says overconsumption of nondigestible carbohydrates can lead to undesirable gastrointestinal side effects. [1] Chicory can also trigger allergy: published cases describe oral allergy symptoms in people allergic to birch pollen, and work-related nose and eye symptoms and asthma from chicory root dust. [2][3]
What chicory is
Chicory is Cichorium intybus L., a member of the daisy family (Asteraceae) according to GBIF. [4] The research below used chicory-derived inulin (a fiber) and dried chicory root. [5][6] Roasted chicory root as a coffee substitute is common, but the sources we read do not cover it, so this page does not judge it. See also prebiotic foods: inulin, onions, garlic, chicory and prebiotic fibers.Traditional use
Proper evidence not found: we did not read a source describing the traditional use of chicory root in a specific region or period, so we do not describe one.What research shows
| Use | What the source found | Strength of evidence | Form and people studied |
|---|---|---|---|
| Constipation (inulin from chicory) | A 2014 meta-analysis of 5 randomized trials (252 people) found a significant overall effect of inulin on stool frequency; pain and bloating did not improve. [7] | Promising but limited | Inulin, not whole root; people with chronic constipation |
| Constipation (single trial) | In a crossover trial of 44 healthy volunteers with constipation, 4 weeks of 3 x 4 g daily chicory inulin raised median stool frequency to 4.0 versus 3.0 per week on placebo (p = 0.038). [5] | Promising but limited | Chicory inulin; 44 adults |
| Bowel function (dried whole root) | In a randomized, placebo-controlled trial of 55 people at risk of type 2 diabetes, dried chicory root increased stool softness and frequency. [6] The authors disclosed links to the company that supplied the material, and the trial was not in people with constipation. [6] | Promising but limited | Dried root; 55 adults at risk of type 2 diabetes |
| Guideline view | A 2024 review of medical guidelines said that for chronic constipation, the best data exist for psyllium and chicory inulin. [8] | Promising but limited | Guideline review (German) |
| Blood sugar | The same dried-root trial reported that day-to-day glucose variability fell in the chicory group. [6] | Insufficient evidence (one small trial, biomarker only) | Dried root; 55 adults at risk of type 2 diabetes |
| Weight, liver, "cleansing" | Proper evidence not found in the sources we read. | Insufficient evidence | Not applicable |
Fiber outcomes belong to the fiber, not to a claim about the whole plant. A result for inulin does not transfer to roasted root, tea or tincture.
Forms
Studies used purified chicory inulin and dried chicory root. [5][6] Product labels vary; look for what the label says it contains (inulin, dried root or extract). We give no amounts for a person; the trial amount above is for that trial only, and a clinician or pharmacist decides what suits an individual.Safety
- Digestion: a review of 103 trials counted bloating, flatulence and rumbling as tolerance effects of nondigestible carbohydrates, and tolerance differed by fiber type. [1]
- Allergy and cross-reactivity: chicory is in the daisy family. [4] One case was a vegetable wholesaler with reactions after oral, skin or inhaled exposure, who also reacted to related endive and lettuce. [9] Chicory has been added to foods that can cross-react with birch pollen. [2] See herbal allergy and cross-reactivity.
- Medicines, pregnancy and breastfeeding, children, liver and kidney, surgery: not described in the sources we read. Lack of information is not proof of safety; ask a pharmacist (how interactions work) and see pregnancy and breastfeeding.
- Constipation that persists or comes with pain or bleeding: see a clinician rather than self-treating.
Quality
Chicory-containing products are often foods or fiber supplements; see quality testing and certifications.Frequently asked questions
Does chicory root help constipation?
A 2014 meta-analysis found chicory-type inulin improved stool frequency, though not pain or bloating. [7] Results are for inulin fiber.
Can chicory cause gas?
Fibers like inulin can cause bloating and gas if overconsumed, according to a review of tolerance in 103 trials. [1]
Can I be allergic to chicory?
Yes. Cases of oral allergy, skin and breathing reactions are published. [9][2]
Is chicory the same as inulin?
No. Inulin is a fiber found in chicory root; trials used either purified inulin or dried root. [5][6]
Is chicory coffee healthy?
Proper evidence not found in the sources we read.
References
- Mysonhimer AR, Holscher HD. Gastrointestinal effects and tolerance of nondigestible carbohydrate consumption. Adv Nutr. 2022. Read 2026-10-23.
- Cadot P, Kochuyt AM, van Ree R, Ceuppens JL. Oral allergy syndrome to chicory associated with birch pollen allergy. Int Arch Allergy Immunol. 2003. Read 2026-10-23.
- Pirson F, Detry B, Pilette C. Occupational rhinoconjunctivitis and asthma caused by chicory and oral allergy syndrome associated with bet v 1-related protein. J Investig Allergol Clin Immunol. 2009. Read 2026-10-23.
- GBIF Backbone Taxonomy, Cichorium intybus match record. Read 2026-10-23.
- Micka A, Siepelmeyer A, Holz A, et al. Effect of consumption of chicory inulin on bowel function in healthy subjects with constipation: a randomized, double-blind, placebo-controlled trial. Int J Food Sci Nutr. 2017. Read 2026-10-23.
- Puhlmann ML, Jokela R, van Dongen KCW, et al. Dried chicory root improves bowel function, benefits intestinal microbial trophic chains and increases faecal and circulating short chain fatty acids in subjects at risk for type 2 diabetes. Gut Microbiome. 2022. Read 2026-10-23.
- Collado Yurrita L, San Mauro Martin I, Ciudad-Cabanas MJ, et al. Effectiveness of inulin intake on indicators of chronic constipation: a meta-analysis of controlled randomized clinical trials. Nutr Hosp. 2014. Read 2026-10-23.
- Utz S, Bittel M, Langhorst J. Phytotherapeutic recommendations in medical guidelines for the treatment of gastroenterological diseases: a systematic review (German; English abstract). Z Gastroenterol. 2024. Read 2026-10-23.
- Cadot P, Kochuyt AM, Deman R, Stevens EA. Inhalative occupational and ingestive immediate-type allergy caused by chicory (Cichorium intybus). Clin Exp Allergy. 1996. Read 2026-10-23.