Areca nut

The areca nut is the seed of the areca palm, which grows in much of the tropical Pacific, South Asia, Southeast Asia, and parts of east Africa. It is commonly referred to as betel nut, not to be confused with betel leaves that are often used to wrap it . Consumption has many harmful effects on health and is carcinogenic to humans. Various compounds present in the nut, including arecoline, contribute to histologic changes in the oral mucosa. It is known to be a major risk factor for cancers of the mouth and esophagus. As with chewing tobacco, its use is discouraged by preventive efforts. Consumption by hundreds of millions of people worldwide – mainly of South Asian or Southeast Asian origins – has been described as a "neglected global public health emergency".