How Many Cups of Coffee a Day Are Safe for Kidney Function

Research shows that moderate coffee consumption (two to three 240 ml cups a day) is safe for most people with chronic kidney disease and may reduce the risk of developing pathologies by 14%. Coffee contains polyphenols and antioxidants, prevents stones, but requires caution in hypertension and potassium control.

The article discusses the safety of coffee consumption for kidney health. Dietitians Sarah Prato and Melanie Betz state that moderate consumption (two to three 240 ml cups per day) is safe for most people with chronic kidney disease and may even improve their condition. A meta-analysis showed a 14% reduction in the risk of kidney disease among those who drink two or more cups a day. The protective effect is attributed to polyphenols, chlorogenic acids, and melanoidins. Coffee also prevents stone formation by increasing diuresis. However, caution is advised for those with hypertension, as caffeine can temporarily raise blood pressure. It is recommended to limit sugar and saturated fats and to monitor potassium levels (about 100 mg per cup).