2, containing 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 chew betel nut too much, which may lead to miscarriage.
Extended data:
1, betel nut? L) Areca catechu is an evergreen tree of Palmae, with erect stem and tree shape, with a height of more than10m, up to 30m, obvious annular leaf scars, monoecious, multi-branched inflorescences, oblong ovary, oblong or ovoid fruit, ovoid seeds and flowering period of March-April.
2. Areca catechu originated in Malaysia. Areca catechu is mainly distributed in Southeast Asia, tropical Asia, East Africa and parts of Europe. In the Pacific Ocean, it is mainly distributed in Papua New Guinea, Solomon Islands, Fiji, Vanuatu and Micronesia, with sporadic distribution in Pinape Island, American Mariana Islands and Marshall Islands. Betel nuts in Hawaii are grown just for viewing.
3. Areca catechu is a warm and humid positive plant, which likes high temperature and rainy climate. They are usually distributed in low mountain valleys, under ridges, under hillsides and secondary forests in tropical monsoon forest near Pingyuan Creek, and also grow in valleys, hills, sparse forests and barren hills with slightly acidic to neutral sandy loam. Mainly distributed between 28 degrees north and south latitude, the optimum temperature is 10-36℃, the lowest temperature is not lower than 10℃, the highest temperature is not more than 40℃, the altitude is 0- 1000m, and the annual rainfall is 1700-2000mm.
References:
Baidu encyclopedia: betel nut