Watermelon is often hailed as a perfect summer fruit—juicy, refreshing, and hydrating. It’s rich in water, antioxidants like lycopene, and essential vitamins such as vitamin C and A. However, despite its health benefits, watermelon isn’t suitable for everyone. Certain groups of people may experience adverse effects from consuming watermelon, especially in large quantities.
Here are 5 groups of people who should avoid or limit watermelon consumption, supported by medical sources and nutritional facts:
1. People with Diabetes
Why:
Watermelon has a high glycemic index (GI) of about 72, which means it can cause a spike in blood sugar levels, even though its glycemic load (GL) is relatively low due to its high water content.
Scientific Insight:
According to the American Diabetes Association (ADA), people with diabetes should monitor fruit intake carefully, especially fruits with high GI values. Although watermelon contains fiber and natural sugars, excessive consumption can lead to hyperglycemia.
Tip:
Diabetics should consume watermelon in small portions and pair it with a source of protein or fat to slow sugar absorption.
2. Individuals with Hyperkalemia (High Potassium Levels)
Why:
Watermelon is a natural source of potassium. A single wedge (about 286g) contains nearly 320mg of potassium.
Risk:
People with kidney disease or hyperkalemia cannot effectively filter excess potassium, which can lead to irregular heartbeats or even heart failure.
Medical Reference:
The National Kidney Foundation warns against high-potassium foods in people with compromised kidney function.
3. People with Gastrointestinal Disorders
Why:
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