[Click! Health] Chronic Kidney Disease Patients, Be Careful with Water Intake in Summer... "Beware of Excessive Hydration"

During the summer, the consumption of water and various beverages increases due to thirst. However, patients with chronic kidney disease need to be cautious about fluid intake, as excessive hydration can cause problems during dialysis.

Professor Jin-suk Kim of the Department of Nephrology at Kyung Hee University Hospital advised, "In severe chronic kidney disease patients with reduced urine output or those undergoing dialysis, excessive fluid intake can cause edema and weight gain between dialysis sessions, making dialysis less effective or leading to fluid accumulation in the lungs or heart, so caution is necessary."

However, excessively restricting fluid intake is also not beneficial for kidney disease patients. Professor Kim stated, "Unconditionally limiting fluid intake can actually cause kidney damage due to dehydration," adding, "It is important to assess the stage of chronic kidney disease and urine output and determine the appropriate fluid intake with the help of medical professionals."

In addition to fluids, attention should be paid to the intake of potassium-rich fruits. Representative summer fruits such as watermelon, oriental melon, and banana are rich in potassium. If the kidneys are healthy, potassium is efficiently excreted to maintain proper potassium levels in the body, but patients with kidney disease who have difficulty excreting potassium should avoid consuming these fruits. Professor Kim warned, "If potassium is not excreted and continues to accumulate in the body, it can lead to arrhythmia or heart attack," and explained, "If you want to eat fruit, it is recommended to consume small amounts divided across meals rather than eating a large quantity at once."

Furthermore, patients undergoing dialysis should minimize scratching or causing wounds on their bodies, as their immune system is significantly weakened and less able to defend against external bacteria. Additionally, due to hot and humid weather, there is a higher risk of viral infections from food and insects during summer, so caution is necessary. Exercise should not be neglected either. Professor Kim emphasized, "For kidney disease patients, exercise and dietary control are essential elements alongside managing risk factors such as diabetes and hypertension."

Finally, Professor Kim advised, "Chronic kidney disease is a lifelong condition requiring continuous treatment, and the patient's willpower is paramount," adding, "If patients recognize the disease as a partner rather than an enemy and practice precautions in daily life one by one, they should not forget that a healthy summer is achievable."

Professor Jin-suk Kim, Department of Nephrology, Kyung Hee University Hospital. [Photo by Kyung Hee University Hospital]