Evidence supporting the use of: Japanese Horseradish
For the health condition: Colds (with fever)

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Synopsis

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

Japanese Horseradish, commonly known as wasabi (Wasabia japonica), has a history of traditional use in Japanese cuisine and folk medicine. Traditionally, wasabi has been valued for its pungent flavor as well as for its presumed antimicrobial properties. In the context of colds—particularly colds accompanied by fever—wasabi has been used in folk practices in Japan and some East Asian cultures as a food believed to help "clear" the sinuses due to its strong, volatile compounds (such as allyl isothiocyanate). It is thought that the sinus-clearing effect and the pungency might provide subjective relief from nasal congestion, a common symptom of colds.

However, there is very limited scientific evidence to support wasabi's use for treating or alleviating the symptoms of colds or fever. Most modern research on wasabi focuses on its potential antimicrobial, anti-inflammatory, and anticancer properties in vitro or in animal studies, rather than on clinical efficacy in treating respiratory infections in humans. There are no high-quality clinical studies demonstrating that wasabi is effective in treating colds or reducing fever. Its use in this context is therefore rated as "traditional," and the evidence for its efficacy is weak, meriting a score of 2 out of 5.

More about Japanese Horseradish
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