To match feature TAIWAN-BETELNUT/
Tsai Lin-jang, who lost his jaw due to oral cancer, listens to a question during an interview with Reuters in Taoyuan July 3, 2007. Tsai, 60, had eaten betel nuts for 25 years, till he developed the cancer. He has since quit eating them after losing his jaw. For centuries, hundreds of millions of people across Asia, from Pakistan to Palau, have chewed the spicy date-like fruit of the betel palm for a quick buzz. Then four years ago, a World Health Organisation study found that chewing betel nuts can cause oral cancer and that the rate of these malignant mouth tumours was highest in Asia where the betel nut is a widely used stimulant. To match feature TAIWAN-BETELNUT/ REUTERS/Pichi Chuang (TAIWAN)