Eating betel nut once in a while is less harmful and is not recommended. Betel nut is the fruit of the betel nut tree. Eating betel nut once in a while is not harmful to the organism. However, it is not recommended to chew betel nut for a long time, because the chewing process of betel nut will produce a certain degree of wear and tear on the teeth, if the betel nut attached to the teeth will also lead to plaque, calculus and other oral problems; betel nut will also stimulate the oral mucosa, leading to the occurrence of oral ulcers, increasing the risk of oral cancer; betel nut in the alkaloid component will stimulate the gastric mucosa, is not conducive to the health of gastrointestinal tract. It should be noted that excessive consumption of betel nut may cause poisoning, cardiac arrest, respiratory distress, coma and other symptoms. Healthy people are not recommended to eat betel nut in their daily life.