Eating a lot of watermelon in a short time will increase the water in the body and exceed the physiological capacity of the human body. However, in patients with renal insufficiency, the kidney's ability to regulate water is greatly reduced, and excess water cannot be excreted in time, resulting in a sharp increase in blood volume, which is likely to lead to acute heart failure and death.

2, oral ulcer.

Watermelon has diuretic effect, which can make the heat in the body be discharged with urine. If people with oral ulcers eat more watermelons, the normal water needed in the body will be discharged through the diuretic effect of watermelons, which will aggravate the state of weak vaginal fluid, while yin deficiency will increase the internal heat, thus aggravating the ulcer.

3. Early stage of cold

Watermelon is a good fruit for clearing away heat and relieving summer heat, but patients in the early stage of cold should eat it carefully. Traditional Chinese medicine believes that divergent treatment should be adopted in the early stage of cold, so that the pathogenic factors can be solved from the exterior. If you eat watermelon at the beginning of a cold, not only can you not spread the disease! On the contrary, it will promote evil to enter the body due to the effect of clearing away heat and toxic materials, which will aggravate the condition or prolong the cure time. Therefore, patients in the early stage of a cold should be careful to eat watermelon, but those who recover from a cold or get worse with high fever and sore throat should eat watermelon.

4, the body is cold in the stomach, loose stool, indigestion.

Eating more watermelons will cause abdominal distension, diarrhea, loss of appetite and other symptoms. People with poor gastrointestinal digestion, nocturia and frequent nocturnal emission should not eat more watermelons.