Synopsis

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

Nettle (Urtica dioica), also known as stinging nettle, has a long history of use in traditional herbal medicine for supporting kidney function and urinary tract health. In many traditional systems, including European folk medicine and Western herbalism, nettle is employed as a mild diuretic, meaning it is believed to promote increased urine output. Herbalists have historically recommended nettle to help "flush out" the kidneys and urinary tract, supporting the elimination of waste products and potentially reducing the risk of kidney stones and urinary tract infections. This traditional use is often attributed to nettle's content of potassium, flavonoids, and phenolic compounds, which are thought to contribute to its diuretic effects.

However, modern scientific evidence supporting nettle's benefits specifically for kidney health is limited. Some in vitro and animal studies suggest nettle may have mild diuretic and anti-inflammatory properties, but high-quality clinical trials in humans are lacking. Most available studies focus on nettle's effects on joint health, allergies, and benign prostatic hyperplasia rather than direct impacts on kidney function. Therefore, while nettle's use for supporting the kidneys is well-established in traditional practice, direct scientific validation remains minimal, justifying a moderate evidence rating of 2.

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