Drinking coffee is not related to kidney disease, according to the National Kidney Foundation. Coffee contains caffeine, which is a mild diuretic, but consuming it in moderate amounts does not permanently impact the kidneys or cause chronic kidney disease. Caffeine does increase blood pressure and urine output for brief periods.
Results are inconclusive in studies indicating a link between continuous high blood pressure and daily consumption of coffee in large quantities, notes the National Kidney Foundation. To prevent or alleviate kidney stones, individuals should drink no more than about two cups of coffee daily. Individuals may experience rapid fluid loss and dehydration when they consume too much caffeine, notes MedlinePlus.