Love Watermelon? It Could Be Risky for These 5 Groups
Watermelon is one of summer’s sweetest pleasures—bursting with juicy flavor, hydrating water, and a wealth of vitamins and antioxidants. It’s a refreshing way to beat the heat, but for some people, it’s not always the best choice. Certain health conditions mean you might need to enjoy this fruit in moderation or avoid it altogether to prevent unwanted side effects.

For those with diabetes, watermelon’s high glycemic index can cause blood sugar levels to rise quickly. People with kidney problems should be mindful of its potassium content, which can strain the kidneys and lead to complications. If you suffer from IBS, its natural FODMAP sugars may trigger bloating, cramping, or other digestive discomfort. And in rare cases, watermelon can even cause allergic reactions such as itching, swelling, or hives.

Even if you’re in good health, portion size still matters. One cup of watermelon contains about 9–10 grams of natural sugar, which can add up fast. Eating large amounts might interfere with low-sugar diets, affect weight management, or cause energy spikes and crashes. The healthiest way to enjoy it is in small portions pair it with a source of protein or healthy fat to slow sugar absorption and keep your energy steady.

In the right amounts, watermelon can be a delicious, hydrating addition to your diet. But like any food, it’s not one-size-fits-all. If you have a medical condition or dietary restrictions, check with your doctor before making it a summer staple. By knowing your body’s needs and practicing mindful moderation, you can savor every sweet bite safely and without guilt.