Evidence supporting the use of: Fern
For the health condition: Glands (swollen lymph)

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Synopsis

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

Ferns, particularly species like Polypodium vulgare and Dryopteris filix-mas, have been used in traditional herbal medicine across various cultures for a range of ailments. In some folk practices, poultices or topical applications of fern leaves have been used to address "swollen glands," which typically refers to swollen lymph nodes. The rationale in traditional healing often centered on the cooling, anti-inflammatory, or "drawing" properties attributed to these plants. However, documentation linking ferns specifically and consistently to the treatment of swollen lymph nodes is relatively limited and not widespread compared to other herbs. There is little to no direct scientific evidence supporting the efficacy of fern species in reducing lymphatic swelling or treating underlying causes such as infection or inflammation. Most modern herbal texts do not list ferns as a remedy for glandular or lymphatic conditions. Furthermore, some fern species contain compounds (such as thujone in some varieties) that may be toxic if misused. In summary, while there is a minor traditional precedent for the use of ferns in this context, it is not well-supported by robust clinical or pharmacological research, and the practice is not widely recommended in contemporary herbal medicine.

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