Professor ARUP RATAN CHOUDHURY is a dedicated and self-motivated dentist.  He is working in the field of dentistry since 1976 (36 Years). He started his career in 1976 as a dental surgeon under the ministry of health, Government of the people Republic of Bangladesh and served in different district hospital including remote areas. After long experience he found that most of the people are suffering from oro- dental problem along tobacco habits and drug addiction. Then he started to do health education programs in different electronic media like radio, television and published articles on dental health & tobacco hazards in different national daily newspapers since 1979. In 1987 he was invited to visit USA under the program of USIS (UNITED STATES INFORMATION SERVICE) on drug abuse prevention. After his return he formed an NGO in 1989 known as MANAS Association for the Prevention of Drug Abuse and became the founder president in 1989. Since then He is working with the government on tobacco control and drug abuse. He has done lot of research work in BIRDEM (WHO COLLABORATING CENTER) on dental health, Diabetes and tobacco hazards & already presented 38 scientific papers in international seminars. He also published 11 books on Dentistry, AIDS, Tobacco hazards & Drug abuse and distributed in different school and colleges of Bangladesh for awareness among the students. At present he is the Professor & Hon. senior consultant of department of Dentistry in BIRDEM & also the founder president of MANAS.  He is the member of national drug control board and national tobacco control task force. For all these activities and outstanding contribution his organization & he received “Tobacco or Health” medal from WHO in 1995 & 1998.