(1) Areca catechu has the functions of eliminating phlegm, relieving cough, promoting digestion, sobering up, stopping vomiting and expelling worms. It can kill insects, promote digestion, eliminate accumulation, and reduce qi and promote qi circulation. In addition, betel nut can also be used to treat tapeworm, ascaris lumbricoides, Jiang Ye's disease, edema beriberi and other diseases.

(2) After chewing betel nut, people often feel excited, their cheeks are red and they sweat slightly, just like drinking wine. Therefore, eat areca can keep out the cold and eliminate the fatigue after intense labor.

(3) Areca catechu can inhibit influenza virus. Proper consumption can enhance human immunity and resistance.

(4) Proper consumption of betel nut can increase intestinal tension and peristalsis, reduce diarrhea and flatulence, and also make gastrointestinal mucosa highly secreted and increase appetite. In addition, it also has antifungal effect.

2. Disadvantages of eat areca

(1) The juice of betel nut is purplish red. Chewing betel nut for a long time will make people's teeth black. After chewing betel nut, spit the residue on the ground, red and stained, like blood, affecting public health.

(2) It contains carcinogenic alkaloids. Qiu Zhanxian, head of the first department of Taipei Health Bureau, said that 88% to 92% of oral cancer patients in Taipei were caused by chewing betel nut.

(3) Pregnant women who chew betel nut too much may cause miscarriage.