Rajesh N. Sharan, Ph. D., is a Professor at Department of Biochemistry and Director of Design Innovation Center at North-Eastern Hill University, Shillong (India). Rajesh is a Molecular Biologist and Biochemist by training with over 3 decades of research experience in the field of betel (Areca) nut & chemical induced carcinogenesis, and molecular mechanisms of radiation induced damage to DNA & its repair with expertise in biomarker discovery for cancer and radiation damage assessment for their clinical applications. Rajesh is a former President of Indian Society for Radiation Biology and currently a member of CRP of IAEA (Vienna). He has over 105 research publications & books, and few patents to his credit. Rajesh serves as an Associate Editor of the Journal of Radiation Research. Since last year, Rajesh has developed keen interest in the field of tobacco harm reduction in India and initiated research in this area.