Watermelon juice contains almost all kinds of nutrients needed by human body except fat, such as vitamins A, B, C, protein, glucose, sucrose, fructose, malic acid, glutamic acid, citrulline, arginine, phosphoric acid, calcium, iron, phosphorus and crude fiber.
Watermelon tastes sweet and cold, and has the effects of clearing away heat and relieving vexation, quenching thirst, relieving summer heat, soothing the middle energizer, treating laryngitis, facilitating urination, treating blood dysentery and relieving alcoholism. It is suitable for heatstroke, fever, excessive heat, body fluid injury, boredom and thirst, scanty urine and yellow urine, sore throat, etc. When acute fever, fever, thirst, excessive sweating and irritability occur, drinking fresh watermelon juice can clear away heat and quench thirst. Watermelon peel is fresh or dried and used as medicine. It tastes sweet and cool, and has the effect of clearing away heat, diuresis and detumescence. It can be used to treat dysuria, edema and damp-heat jaundice. The green part of watermelon peel, "Watermelon Cuiyi", can treat edema, scald, nephritis and other diseases. It is also a good cool drink to relieve summer heat by using its decoction instead of tea.
Modern pharmacological research believes that the sugar, salt and protease contained in watermelon can treat nephritis and lower blood pressure. Watermelon kernels also contain an ingredient that can lower blood pressure. Take 9-15g of raw food or stir-fried food, which can reduce blood pressure and relieve the symptoms of acute cystitis. The decoction of roots and leaves of watermelon is taken orally, which has certain curative effect on diarrhea and enteritis. Watermelon peel contains glucose, amino acids, malic acid, lycopene and C, etc. After being dried in the sun, watermelon peel can relieve summer heat, diminish inflammation and lower blood pressure, and also reduce the deposition of cholesterol on the arterial wall.
When eating watermelon, there are also some problems that need attention.
First, don't eat too much, otherwise it will hurt the spleen and stomach and cause pharyngitis. 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 to help damp and guide.
Cause disease. Eating too much watermelon at a time will dilute the gastric juice, causing indigestion and decreased gastrointestinal resistance.
Second, 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.
Third, don't eat watermelons that have been opened 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.
Fourth, 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.
Fifth, people with oral ulcers should not eat. Traditional Chinese medicine believes that the main causes of oral ulcers are internal heat due to yin deficiency, disturbance caused by virtual fire, and burning flesh and blood veins. Watermelon has diuretic effect. If people with oral ulcer eat more watermelon, the normal water needed in the body will be discharged through the diuretic effect of watermelon, which will aggravate the state of deficiency of vaginal fluid. Yin deficiency will increase internal heat and aggravate oral ulcer.
Sixth, people with diabetes should eat less. Watermelon contains about 5% sugar. If diabetics eat too much watermelon, it will also lead to high blood sugar, increased urine sugar and other consequences, and even severe ketoacidosis coma will occur. If you eat 25-50 grams of watermelon at a time, it will have little effect on diabetics, so diabetics should pay attention to the right amount when eating watermelon.