The areca nut, also known as betel nut, is a seed from the Areca palm tree that is commonly chewed in many Asian and Oceanic countries. It is typically mixed with betel leaf and spices like lime and is used in cultural traditions and ceremonies. However, regular chewing of areca nut has been linked to higher risks of various cancers as well as tooth staining, loss, and other oral health issues. While it has traditional uses, modern research indicates areca nut chewing can be addictive and harmful to long-term health.