
Smokeless tobacco (Naswar) use is an issue of public health concern in Khyber Pakhtunkhwa (KP) province of Pakistan. Epidemiological evidence suggests a strong causal association between Naswar use and incidence of oral cancer. This study aims to unravel the biological mechanism underlying naswar-induced oral carcinogenesis by focusing on (1) changes in oral microbiome diversity and functions, (2) inflammation, and (3) oxidative stress in Naswar users.