Which systems receive extensive documentation for support beyond the implied benefit for the filtering organs?

Digestive and cardiovascular systems

While the naming convention suggests an affinity for the kidneys, which are filtering organs, the bulk of scientific documentation and nutritional analysis points toward profound support for two other major systems when consuming kidney beans. The digestive tract receives undeniable support primarily due to the exceptionally high content of both soluble and insoluble fiber, which regulates regularity and feeds the gut microbiome. Simultaneously, the cardiovascular system gains considerable advantage through the combined action of potassium for blood pressure management and soluble fiber for reducing LDL cholesterol. These documented, extensive roles in digestion and circulation often overshadow specific, direct benefits often attributed solely to the renal system, demonstrating the food's broad utility.