龍眼是台灣夏季盛產的水果，中醫觀點認為，它味甘性溫，益心脾、安神養血，滋養補益作用良好，適量吃對心脾虛損、氣血不足所造成的失眠、健忘、驚悸、眩暈等症有一定的食療功效。
龍眼雖好，但食用過量也容易造成反效果，據陸媒《家庭醫生在線》報導指出，龍眼吃過多有以下幾種危害，而且五類人不宜食用。
龍眼食用過量的兩大危害
一、上火
龍眼吃多了容易上火，可能導致痰多、長痘痘、喉嚨不適，除了控制食用分量外，建議可搭配梨子、蘋果等涼性水果同吃，減少上火的機會。
二、滯氣
中醫師表示，龍眼屬於濕熱食物，吃過量容易導致滯氣，進而損害身體健康，故建議一次不要吃太多。
哪些人不宜吃龍眼？
中醫講究依個人體質來選擇適當食物，有內熱痰火、皮膚病或痛風的人都不宜多吃桂圓。中醫將痛風歸於「痺症」範疇，病因是由於風寒濕熱等邪氣，導致氣血凝滯而發作，故患者不宜吃容易引起氣滯的龍眼。
另外，對於體內有熱的哮喘患者，吃龍眼則會引發肺熱咳嗽，切記減少食用。因龍眼含糖量高、含鉀量高，患有糖尿病、腎臟病者食用前最好先諮詢醫師或營養師，以免引發不良後果。
Longan is a fruit that is abundant in Taiwan in the summer. The Chinese medicine view believes that it is sweet and warm, beneficial to the spleen, soothing the nerves, nourishing and nourishing. The right amount of insomnia, forgetfulness, convulsions and dizziness caused by deficiency of heart and spleen and lack of blood Essence has a certain therapeutic effect.
Longan is good, but excessive consumption is also likely to cause counter-effects. According to Lu Media's "Family Doctor Online" report, longan eating has the following kinds of hazards, and five types of people should not eat.
Two major hazards of excessive consumption of longan
First, get angry
If you eat more longan, it is easy to get angry. It may lead to phlegm, acne, and throat discomfort. In addition to controlling the amount of food, it is recommended to eat with cold fruits such as pears and apples to reduce the chance of getting angry.
Second, stagnant gas
Chinese medicine practitioners said that longan is a hot and humid food. Eating too much can lead to stagnation and damage to health. Therefore, it is recommended not to eat too much at one time.
Who should not eat longan?
Chinese medicine pays attention to the choice of appropriate food according to personal physique. People who have internal heat, skin disease or gout should not eat longan. Chinese medicine treats gout into the category of "sickness". The cause is due to the evil of wind, cold and dampness, which causes the blood to stagnate and attack. Therefore, patients should not eat longan that is easy to cause qi stagnation.
In addition, for patients with asthma in the body, eating longan will cause lung heat cough, remember to reduce consumption. Because longan has high sugar content and high potassium content, it is best to consult a physician or dietitian before eating with diabetes or kidney disease to avoid adverse consequences.
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