Evidence supporting the use of: Cornsilk
For the health condition: Urination (frequent)
Synopsis
Source of validity: Traditional
Rating (out of 5): 2
Cornsilk (Zea mays stigma) has a long history of use in traditional herbal medicine, especially in Native American, Chinese, and various folk medical systems, as a remedy for urinary tract issues, including frequent urination, cystitis, and other mild urinary complaints. Traditionally, cornsilk tea or extracts have been employed as a soothing diuretic, believed to promote increased urine flow, reduce irritation of the urinary tract, and help flush out bacteria or irritants. This traditional use is partly based on cornsilk's mild diuretic properties, which have been observed in animal studies but are less substantiated in rigorous clinical trials.
Modern scientific evidence is limited. Some animal studies suggest that cornsilk may increase urinary output and reduce markers of inflammation, possibly due to flavonoids, saponins, and other phytochemicals present in the plant. However, high-quality human clinical trials are lacking, and the mechanisms, efficacy, and safety in humans remain unclear. No major medical guidelines cite cornsilk as a proven therapy for frequent urination. Nonetheless, its use persists in herbal traditions and some over-the-counter herbal blends. Overall, cornsilk’s use for frequent urination is primarily supported by traditional practice and anecdotal evidence, with only weak preliminary scientific support.