Synopsis

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

Rhubarb root (Rheum palmatum or Rheum officinale) has a long history of use in traditional Chinese medicine (TCM) for supporting kidney health, although most often it is used as a purgative and to clear heat and toxins from the body. In TCM, rhubarb root is thought to "clear damp-heat" and "promote urination," which translates to supporting the urinary tract, including the kidneys. Some traditional formulas employ rhubarb for kidney-related conditions, particularly where there is perceived stagnation or toxin accumulation. However, the use is based on historical practice rather than modern scientific validation specifically for kidney support.

Scientific evidence for rhubarb root’s efficacy in supporting kidney function is limited and largely preclinical. Some laboratory and animal studies suggest potential benefits in reducing markers of kidney injury or fibrosis, mainly due to the presence of anthraquinone compounds which may have anti-inflammatory and antioxidant effects. A few clinical trials have explored rhubarb’s adjunctive use in chronic kidney disease in China, but methodological issues and small sample sizes limit the strength of these findings. Overall, the traditional use far outweighs rigorous scientific substantiation for direct support of the kidney body system.

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