Sagara APMC is one of the main market for areca nut in Karnataka. Current science is confident that areca nut chewing is carcinogenic. Use of Areca nut is associated with oral submucous fibrosis. In Australia, the sale of areca nut is prohibited. He also noted that Chinese would chew it with areca nut. Vast plantings of areca nut can be found in the district. Gambier has been used as a form of catechu for chewing with areca nut. The main carcinogenic factor is believed to be areca nut. The chewing of betel with areca nut was formerly also an important custom. Plantation crops like coconut, areca nut, cocoa, cashew nut, and pepper are also grown. In Thailand, the consumption of areca nut has declined gradually in the last decades. The wedding ceremony is called Melah Pinang (Areca nut Splitting). "Areca catechu" is grown for its commercially important seed crop, the areca nut. Powdered areca nut is used as a constituent in some dentifrices. In Bhutan, the areca nut is called "doma".