The use of beans, particularly Phaseolus vulgaris (common beans) and their pods (also known as “kidney bean pods”), for kidney stone treatment is primarily based on traditional medicine, especially in folk remedies across various cultures. Historically, decoctions made from bean pods have been recommended as a diuretic and for promoting kidney health, including the management of kidney stones. The rationale is that increased urination may help flush out small stones or prevent their formation.

However, scientific validation of these traditional uses is limited. While beans are generally a good source of fiber and nutrients, and their pod decoctions may have mild diuretic effects, there is insufficient clinical evidence directly supporting their efficacy in dissolving or passing kidney stones. A few preliminary studies and reviews note the traditional use, but do not provide strong experimental data. No high-quality randomized controlled trials have demonstrated that the consumption of beans or bean pod tea is effective or safe as a primary treatment for kidney stones.

In summary, beans have a historical role in traditional medicine for kidney health, but current evidence supporting their use for kidney stones is weak. As such, their use cannot be recommended as a substitute for established medical treatments.