Although longan is delicious, it is easy to get angry. Usually, each person should not eat more than 6 taels of longan per day. "Longan disease" occurs due to excessive consumption of longan. The main symptoms are: diarrhea, nosebleeds, oral ulcers, inflammation of the oral mucosa, constipation, etc. Longan is a fruit that is nutritious and can increase appetite, but at the same time it can easily make people "get angry". Therefore, it is not advisable to eat too much of these fruits, especially children, the elderly and those suffering from chronic tonsillitis, pharyngitis, "deficiency of fire", constipation, diabetes and other diseases. They should not eat or eat less "longan" and other " "Inflammation" type of fruits. Citizens without such symptoms should control the amount of longan consumed in a day to about 4 taels, and the maximum daily consumption should not exceed 6 taels. Nutritionists have found that every 100 grams of longan pulp contains 12% to 23% of total sugar, 26.91% of glucose, 1.26% of tartaric acid, 1.41% of protein, 0.45% of fat, and 163.7 mg of vitamin C. , vitamin K 196.6 mg, and vitamins B1, B2, P, etc., processed into dried fruit, containing 74.6 grams of sugar per 100 grams, 35 mg of iron, 2 mg of calcium, 110 mg of phosphorus, 1200 mg of potassium, etc. A variety of minerals, as well as a variety of amino acids, saponin, X-glycine, tannins, choline, etc., which are the source of its powerful nourishing ability. Longan is rich in glucose, sucrose, protein, etc., and also has a relatively high iron content. It can increase heat energy and supplement nutrients while promoting hemoglobin regeneration, thereby achieving the effect of replenishing blood. Studies have found that in addition to its tonic effects on the whole body, longan meat is particularly effective on brain cells, enhancing memory and eliminating fatigue. Modern people live a busy life, use their brains frequently, and have short rest time, which makes them prone to forgetfulness and forgetfulness. Drinking longan meat soaked in water as tea every day can make you clear-minded and improve your memory without even realizing it. . If you are suffering from insomnia caused by overuse of the nerves in the back of your head, you might as well make soup with longan meat to soothe the nerves and help you sleep. Longan has a strong soothing effect, and the large amount of iron, potassium and other elements it contains can treat palpitations and palpitation caused by anemia; moreover, the content of niacin in longan is as high as 2.5 mg per 100 grams, which can be used to treat anemia. Niacin deficiency causes dermatitis, diarrhea, dementia, and even mental disorder. Longan also has a remarkable ability to destroy cancer cells. Japanese research has found that longan is a pioneer in fighting cancer. Regular consumption of longan can reduce the chance of cell canceration and also has a certain inhibitory effect on cancer cells. In addition, flavoprotein in the human body is closely related to the aging process of the human body. Certain special substances in longan can inhibit its production and activity, reduce blood fat, increase coronary blood flow, lower lipids, protect the heart, and delay aging. The effects of aging. Women are prone to anemia because they lose blood during their monthly menstrual period. About 20% of women and 50% of pregnant women are anemic. If it is not very serious, the symptoms of anemia can be changed by adjusting the diet - longan is a good choice. In addition, it tastes sweet, juicy and delicious, so many beauty-loving women regard it as a magic weapon for beauty. Eating longan regularly does have good cosmetic effects in making the face rosy and improving the complexion. It can also make hair black. It is a rare fruit that has both delicious food and therapeutic effects. However, everything has advantages and disadvantages. Some women buy longan very frequently and eat it almost every day. Relevant experts say that not only does this not achieve the beauty effect, but it will cause damage to the body. And as the saying goes: "A place where water and soil nourish a person", if northern women want to maintain their beauty, it is best to choose some fruits produced in the north; in addition, eating fruits depends on their "properties", as those who are prone to acne, pimples and oily skin It is best for people to eat more cool fruits such as apples and pears. Longan is a warming and tonic fruit that has the function of nourishing blood and qi. People with weak constitutions and mothers who have just given birth to some longan are very good for their physical recovery. However, if normal women eat too much longan, they will "attack the upper body", causing pimples on the face, and in severe cases, it will affect menstruation. In addition, pregnant women should also eat less longan.

Although from the nutritional point of view, longan contains glucose, sucrose, vitamin A, vitamin B, tartaric acid and other substances, which is very nutritious. Traditional Chinese medicine also believes that longan has the effect of nourishing the heart and calming the mind, nourishing the blood and benefiting the spleen. However, most women after pregnancy have vaginal discharge. If the blood is deficient, there are often symptoms of dry stool, dry mouth and fetal fever. At this time, eating longan will not only not provide the nourishment it deserves, but may also cause adverse reactions such as abdominal pain and miscarriage. Some people believe that if you eat longan during pregnancy, the eyes of your baby will be "black and bright like longan kernels." In fact, this is just a folk saying and has no scientific basis. Therefore, expectant mothers must not "give birth" for the sake of "birth." If you want a bright-eyed baby, eat a lot of longan, otherwise it will harm your body and fetus.