Watermelon is a cold product, and it is easy to hurt the spleen and stomach if eaten too much. Therefore, it is advisable for people with spleen and stomach deficiency, indigestion and loose stools to eat less, while eating too much will lead to abdominal distension, diarrhea, loss of appetite, and accumulation of cold and dampness, leading to diseases. Eating too much watermelon at a time will dilute the gastric juice, causing indigestion and decreased gastrointestinal resistance.
2. Don't eat watermelon at the beginning of a cold.
Don't eat watermelon at the beginning of a cold, otherwise it will aggravate the cold or prolong the cure time. Both wind-cold cold and wind-heat cold belong to superficial symptoms at the initial stage, and should be treated by divergent methods to solve the pathogenic factors from the exterior. Traditional Chinese medicine believes that the exterior can not be attacked if it is not solved, otherwise it will make the exterior evil enter the interior and the condition will be aggravated. In the early stage of a cold, eating watermelon is equivalent to taking drugs that clear away heat in the interior, which will lead evil into the interior, aggravate the cold or prolong the cure time. However, when the cold gets worse and there are fever symptoms such as high fever, thirst, sore throat and yellow urine, you can eat some watermelon while taking normal medicine, which will help you recover from the cold.
3. Don't eat watermelons that have been open for too long.
When the temperature is high, watermelons are easy to deteriorate and breed germs after being opened for a long time, which will lead to intestinal infectious diseases when eaten. Therefore, when eating watermelons, attention should be paid to choosing ripe fresh watermelons.
4, people with renal insufficiency should not eat.
Eating a lot of watermelons in a short period of time increases the water in the body, which exceeds the physiological capacity of the human body. However, in patients with renal insufficiency, the kidney's ability to regulate water is greatly reduced, and excessive water entering the body cannot be regulated and excreted, resulting in a sharp increase in blood volume and easy death due to acute heart failure.