Evidence supporting the use of: Watermelon
For the health condition: Kidney Stones

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Synopsis

Source of validity: Traditional
Rating (out of 5): 1

Watermelon (Citrullus lanatus) has been traditionally used in various cultures as a home remedy for kidney stones. The rationale stems primarily from its high water content—over 90%—which is believed to help flush the kidneys and urinary tract, potentially reducing the concentration of stone-forming substances. Additionally, watermelon contains modest amounts of potassium and magnesium, minerals that may help prevent the formation of certain types of kidney stones, particularly calcium oxalate stones. Traditional herbal and folk medicine systems, especially in Asia and the Middle East, have included watermelon or its seeds in remedies aimed at promoting diuresis (increased urine production) and supporting kidney health.

However, scientific evidence specifically supporting watermelon’s efficacy in treating or preventing kidney stones is limited and weak. Few clinical studies have directly evaluated watermelon for this purpose. While increased fluid intake is universally recommended to help prevent kidney stones, and watermelon can contribute to overall hydration, it does not possess unique properties that directly dissolve or prevent the formation of stones beyond its water content. Some laboratory studies have noted antioxidant and mild diuretic effects, but these findings have not translated into robust clinical evidence.

In summary, the use of watermelon for kidney stones is justified by tradition and its general hydration benefits, but scientific validation remains minimal. Its role is supportive rather than curative, and it should not replace evidence-based medical interventions for kidney stones.

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