Dhania is the Hindi name for the Coriander seed, a spice used in garam masalaIndian curries, which often employ ground fruits mixed with cumin. Dhania powder acts as a thickener. Roasted coriander seeds, called dhana dal, are eaten as a snack. It is the main ingredient of the two south Indian dishes: sambhar and rasam. Coriander seeds are boiled with water and drunk as indigenous medicine for colds.
Coriander, like many spices, contains antioxidants, which can delay or prevent the spoilage of food seasoned with this spice. A study found both the leaves and seed to contain antioxidants, but the leaves were found to have a stronger effect.
Coriander seeds are used in traditional Indian medicine as a diuretic by boiling equal amounts of coriander seeds and cumin seeds, then cooling and consuming the resulting liquid. In holistic and traditional medicine, it is used as a carminative and as a digestive aid.
Coriander has been documented as a traditional treatment for diabetes. A study on mice found that coriander extract had both insulin-releasing and insulin-like activity.
Coriander seeds were found in a study on rats to have a significant hypolipidemic effect, resulting in lowering of levels of total cholesteroland triglycerides, and increasing levels of high-density lipoprotein. This effect appeared to be caused by increasing synthesis of bile by the liver and increasing the breakdown of cholesterol into other compounds.
Coriander can produce an allergic reaction in some people.