Chronic arsenic exposure is a major environmental health concern currently affecting millions of people worldwide. Given the consequences of arsenic on human health, this study explores the effects of arsenic exposure in human population currently exposed to alarmingly high levels of arsenic. Genome-wide gene expression pattern analysis provides strong evidences for arsenic to be carcinogenic and to contribute to a well-defined spectrum of diseases. We also identify a potential bio-marker to arsenic induced carcinogenesis. This study thus provides critical insights into modus operandi of the...