Evidence supporting the use of: Fennel
For the health condition: Appetite (deficient)

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Synopsis

Source of validity: Traditional
Rating (out of 5): 2

Fennel (Foeniculum vulgare) has a long history of use in traditional medicine systems, particularly in Ayurveda, Traditional Chinese Medicine, and European herbalism, as an aid for digestive health and to stimulate appetite. Its use for appetite stimulation is primarily based on tradition, with references dating back centuries. Fennel seeds are believed to have carminative and stomachic properties, meaning they can help relieve gas and promote the secretion of digestive juices, which may, in turn, support appetite in individuals experiencing deficiency or loss of desire to eat.

Historical texts describe fennel as an herb that "warms the digestive fire" and "awakens hunger." It was often included in formulations to treat anorexia or poor appetite, especially in convalescent or elderly patients. The aromatic compounds (such as anethole) present in fennel are thought to act on the digestive tract and stimulate appetite, though this has not been robustly tested in modern clinical trials.

Scientific evidence supporting fennel’s use specifically for appetite stimulation is limited and primarily consists of animal studies or anecdotal reports. While some laboratory research suggests that fennel extracts may have mild pro-digestive effects, high-quality human studies are lacking. Thus, while fennel is widely used in traditional contexts for appetite deficiency, the strength of evidence is modest and primarily historical rather than scientific.

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