Synopsis

Source of validity: Traditional
Rating (out of 5): 1

Ferns, particularly certain species such as Dryopteris filix-mas (male fern) and Pteridium aquilinum (bracken fern), have a long history of use in traditional medicine systems, including European folk medicine, Ayurveda, and Native American remedies. These traditions have occasionally cited ferns as remedies for digestive complaints such as gas and bloating, often as part of broader herbal mixtures or infusions. The rationale in these systems is typically based on observed effects or humoral theory, rather than modern pharmacological principles. For example, some folk traditions have recommended fern teas or extracts to "settle the stomach" or relieve discomfort after meals.

However, the evidence supporting the use of ferns for gas and bloating is almost entirely anecdotal or derived from ethnobotanical surveys, rather than rigorous scientific studies. There are very few, if any, clinical trials or pharmacological investigations demonstrating efficacy for this specific purpose. Some ferns contain compounds with mild antispasmodic or anti-inflammatory properties, but these have not been directly linked to relief of gas or bloating in humans. Additionally, certain ferns (such as bracken) are known to be toxic if consumed in significant amounts. Overall, while traditional use exists, the evidence supporting ferns for this application is weak and should be approached with caution.

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