Synopsis

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

Fu Ling (Poria cocos) is a well-known fungus used extensively in Traditional Chinese Medicine (TCM), particularly for conditions associated with the kidney and urinary system, such as nephritis (inflammation of the kidneys). In TCM theory, Fu Ling is prized for its diuretic and dampness-draining properties, believed to help reduce edema (swelling) and support the spleen and kidney functions. It is commonly included in herbal formulas intended to "drain dampness," promote urination, and strengthen the body's resistance to water retention, symptoms often associated with nephritis in TCM diagnostics.

While historical use is robust, scientific validation for Fu Ling’s effects on nephritis is limited. Some in vitro and animal studies suggest that Poria cocos extracts possess anti-inflammatory, immunomodulatory, and diuretic effects, which could theoretically be beneficial in nephritic conditions. However, rigorous clinical trials on humans with nephritis are lacking. Most available research is preliminary, does not directly address nephritis, or uses animal models rather than clinical populations. Thus, while the traditional use is strong and some scientific rationale exists, the direct evidence supporting Fu Ling for treating nephritis remains modest. Its use for nephritis is therefore primarily justified by tradition rather than robust scientific evidence.

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