It would seem, what could be more harmless and useful than a juicy watermelon slice in the summer heat? This symbol of health and freshness can actually become a real threat to people with certain health problems. And it’s not just about the risk of nitrate poisoning.
While most of us enjoy the sweet flesh, for some people this popular dessert is a real stop sign. Doctors warn: at first glance, the harmless strawberry* creates a serious burden on the body, and if you have certain chronic diseases, it is better to refrain from watermelon or consume it in minimal quantities.
* From a botanical point of view, watermelon is a strawberry.
The main blow is on the kidneys
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Medical and nutrition experts are unanimous: the main risk group is people with chronic kidney disease.
“Patients with chronic kidney disease should be cautious when consuming watermelon,” doctors emphasize.
Why is it dangerous?
There are two key reasons:
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Water load
Watermelon contains about 90% water. Its well-known diuretic effect creates a colossal load on the excretory system. If the kidneys are healthy, they can cope easily. But with impaired function (e.g., kidney failure), they cannot remove such a volume of fluid, which leads to edema and increased blood pressure. -
Excess potassium
Watermelon is rich in potassium. The mineral is vital for the heart and muscles, but too much (hyperkalemia) is dangerous. Healthy kidneys remove the excess; diseased kidneys do not. The level of potassium in the blood increases, which can cause muscle weakness, and in severe cases, heart rhythm disturbances up to cardiac arrest.
