At present, betel nut is mainly used in two ways - food and medicine, of which food is the main. Chewing betel nut has the effect of invigorating stomach, insulating against the cold and refreshment. In Central Asia, Southeast Asia, South Pacific Islands and surrounding areas, including Taiwan, Hainan, Hunan and other provinces in China, chewing betel nut is very popular and even becomes a traditional custom. At present, most betel nut are processed into betel nut chewing food, and some are used as fresh fruit.
