Synopsis

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

Papaya has been traditionally used in some cultures as a remedy for canker sores (aphthous ulcers), though scientific evidence supporting this use is limited. The rationale for its use is primarily based on the fruit’s enzymatic content, particularly papain, which is believed to help debride and cleanse wounds. In traditional practices, a small piece of fresh papaya is sometimes placed directly onto the sore, or a paste made from the fruit is applied to the affected area. Historical herbal texts and anecdotal reports suggest its soothing properties may reduce discomfort and potentially hasten healing.

However, clinical research on papaya’s efficacy for canker sores is sparse. A few laboratory studies have explored papain’s wound healing and anti-inflammatory properties, but these are not specific to oral aphthous ulcers, and human trials are lacking. The mild rating (2) reflects that while papaya is used in folk medicine for this condition, the practice is not widely documented in scientific literature. There is also a risk of allergic reaction, especially in individuals sensitive to papain or latex. Overall, papaya’s use for canker sores is rooted in traditional medicine rather than strong scientific validation, and more research would be needed to substantiate its effectiveness.

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