Areca nut use:
an independent risk factor for oral cancer
BMJ (2002)
BMJ article on the evidence demonstrating risks of betel use.
Epidemiology
of Betel Quid Usage
Annals of Academy Medicine (2004)
Review of information and overview of trends relating to Betel internationally.
Effects of
chewing betel nut (Areca Catechu) on the symptoms of people with schizophrenia
in Palau, Micronessia
BJ Psychiatry (2000)
Does betel use improve symptoms of schizophrenia?
Substances