Nutritional benefits and myths regarding watermelon consumption

Watermelon is a highly hydrating fruit, consisting of approximately 91% water, making it an effective tool for maintaining fluid balance and supporting body temperature regulation, especially in elderly populations. While popular myths suggest it can “cleanse” or “detoxify” the kidneys, scientists clarify that the kidneys function autonomously; however, proper hydration from watermelon can help dilute urine and may assist in preventing kidney stones.

Nutritionally, watermelon is low in calories (about 46 per cup) and contains less sugar than many other fruits, such as apples or blueberries. It is a source of lycopene, vitamin C, potassium, and citrulline, an amino acid that supports cardiovascular health by aiding blood vessel relaxation.

Despite these benefits, individuals with Chronic Kidney Disease (CKD) or diabetes should exercise caution. While the National Kidney Foundation classifies it as a low-potassium fruit, excessive consumption can lead to dangerous accumulations of potassium and fluids in patients with advanced kidney disease or those undergoing dialysis. Consuming the whole fruit is generally preferred over juice for better sugar management.