Incidence, mortality and oral cancer disability-adjusted life years in 204 countries and territories before and after the adoption of FCTC/WHO: interrupted time series study.

The development of oral cancer (OC) is strongly associated with tobacco products which is a significant risk factor. In 2003, the WHO recommended that countries adopt the Framework Convention on Tobacco Control (FCTC/WHO), an international treaty that includes a set of public policies for tobacco control. Studies show a reduction in the prevalence of tobacco product consumption in countries that have more strongly implemented WHO/FCTC actions.