Synopsis

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

Sweet flag (Acorus calamus) has a long history of use in traditional medicine systems, particularly in Ayurveda and Traditional Chinese Medicine (TCM), for stimulating appetite and supporting digestive function. In Ayurveda, sweet flag (known as "Vacha") is considered a carminative and digestive stimulant, often prescribed for digestive disorders such as loss of appetite, bloating, and indigestion. Traditional texts suggest it works by enhancing digestive fire ("Agni") and promoting the secretion of digestive enzymes. Similarly, in TCM, sweet flag is used to "transform dampness" and "awaken the spleen," which loosely corresponds to improving appetite and digestion according to TCM theory.

Despite its strong traditional use, scientific validation for sweet flag's appetite-stimulating effects is limited. Some animal studies indicate that extracts of Acorus calamus may increase gastric motility and secretions, which could theoretically enhance appetite, but robust clinical trials in humans are lacking. Additionally, concerns exist regarding the safety of certain constituents, notably β-asarone, which is considered potentially carcinogenic in high doses. As a result, sweet flag preparations in some countries are regulated or restricted.

In summary, sweet flag's use for deficient appetite is well supported by traditional practices, especially in Eastern medicine. However, the level of scientific evidence is low, and safety concerns should be considered before use. Individuals interested in using sweet flag for appetite should consult a qualified healthcare provider.

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