Asteraceae

Cichorium intybus

Chicory · Succory · Witloof

Untested Low

Part used: rootleaf
Native range: Europe, western Asia and north Africa; naturalised worldwide
Morphology: A wiry perennial to a metre and a half with a bare branching stem and clear sky-blue daisy flowers that open in the morning and close by afternoon, over a long white taproot.

What is in it

sesquiterpene lactones lactucin, lactucopicrin

inulin

coumarins

Evidence

Little controlled evidence for medicinal use. Inulin from chicory root is a well-studied prebiotic fibre, which is a nutritional finding rather than a herbal one.

Safety

A food. Inulin causes bloating and wind at higher intake and is a significant irritable bowel trigger. Contact dermatitis in handlers. Allergy in those sensitive to Asteraceae.

Interactions: Theoretical effect on blood glucose

Regulatory: Permitted as a food and as a listed medicine ingredient.

How the traditions classify it

Galenic Cold and dry. Used for the liver and as a cooling bitter — a use that runs from Dioscorides through the Arabic tradition into medieval Europe unchanged.

Three systems, rating the same plant. Where they disagree, none of them is correcting the others — they are separate frameworks that arrived at their categories independently.

Historical use

Used as food, medicine and, from the Napoleonic blockade onward, as a coffee substitute — the roasted root is still standard in New Orleans coffee and in much of Europe.

Recorded as history and attributed where possible. Long use establishes that a plant was widely used, not that it worked, and not that it was safe.

What it is taken for, and who says so

Sold as a coffee substitute and as a source of inulin fibre, marketed for gut health and blood sugar, and used in European folk practice as a liver and digestive bitter.

Recorded because it is what people believe, not because it is what the plant does. Whether any of it holds up is the Evidence section above, and the two frequently disagree. A sincere account of feeling better is compatible with the plant doing nothing — see the placebo effect.

Worth knowing

Chicory is the plant most likely to be in a reader's kitchen without being recognised. Almost all commercial inulin — the prebiotic fibre added to yoghurts, cereal bars and "high fibre" processed food — is extracted from chicory root, and it is the reason a good many people get wind from products marketed as gut-friendly.

Its medicinal reputation is also unusually stable. Dioscorides classes it as cooling and gives it for the liver; the Arabic tradition does the same; Unani practice still prescribes kasni for exactly that today. Two thousand years and three languages, one indication, no controlled trials at all.

Nomenclature verified against GBIF backbone taxonomy.