Watermelon is known as the "king of summer fruits," and many people love to eat it. However, for some people, eating watermelon can cause health problems.
Diabetics: Consuming excessive watermelon can lead to high blood sugar. In severe cases, it may even cause diabetic ketoacidosis and coma.
Patients in the early stages of a cold: While watermelon is an excellent fruit for clearing heat and relieving summer heat, those in the early stages of a cold should be cautious.
Eating watermelon in the early stages of a cold will not only fail to dispel the illness but can also worsen the condition or prolong recovery. Therefore, it is best to eat watermelon after a cold has subsided, or when the condition worsens with high fever and a sore throat.
Those who are weak, have a cold stomach, loose stools, or poor digestion: Eating too much watermelon can cause symptoms such as bloating, diarrhea, and loss of appetite. People with poor gastrointestinal digestion and frequent urination at night should not eat too much watermelon.
Patients with kidney insufficiency: Consuming a large amount of watermelon in a short time can increase the body's water content beyond its physiological capacity. For patients with kidney insufficiency, the kidneys' ability to regulate water is reduced. They cannot adjust and expel the excess water in time, leading to a sharp increase in blood volume, which can easily cause acute heart failure and death.
Patients with oral ulcers: Eating too much watermelon can cause some of the body's normal water to be excreted due to its diuretic effect, thereby worsening the oral ulcers.