Though uncommon, watermelon allergies do exist. Symptoms can range from mild oral allergy syndrome (itching or swelling of the mouth, lips, or throat) to more severe reactions like hives or difficulty breathing. Those allergic to ragweed, cucumbers, or melons may be more likely to react to watermelon. Anyone experiencing these symptoms should stop consumption immediately and seek medical advice.
4. People with Severe Kidney Disease or on Dialysis
Healthy kidneys efficiently filter excess potassium from the blood. However, watermelon is rich in potassium, and for individuals with advanced kidney disease or those undergoing dialysis, consuming too much can lead to hyperkalemia—a dangerous buildup of potassium that can impair heart and muscle function. Medical supervision is crucial before adding it to their diet.
5. The Very Young and the Elderly
Both infants and older adults often have more sensitive digestive systems. The potent hydration and cooling nature of watermelon can sometimes cause stomach upset, loose stools, or even a feeling of chilliness in these groups. Offering small, manageable portions is the safest way for them to enjoy it.
The Bottom Line
For most people, watermelon is a healthy and refreshing choice. But if you fall into one of these categories, moderation is essential. Pay close attention to how your body responds, and when in doubt, always consult a doctor or a registered dietitian for personalized advice tailored to your health needs.
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