Arin's primary research includes clinical medicine, education, environmental health, epidemiology, health services research, information technology, & interdisciplinary research related to these disciplines. Within the field of epidemiology, he is particularly interested environmental epidemiology, clinical epidemiology, and health services research. systematic reviews and meta analyses in the context of health services and outcomes research. His area of interest in inter-disciplinary linkage between health services research and environmental epidemiology. He has published on health impacts and determinants of Arsenic toxicity in the India, and currently edits a systematic review on middle ear pain in airplane travellers for 'Clinical Evidence' – a secondary evidence based journal.