IntroductionAn article in the Journal of European Association for the study of diabetes showed that exposure to outdoor artificial light in night time leads to insulin resistance, poor beta cells function and poor diabetes control.Dr.Yu Zu at Shanghai Institute of Endocrinology and Metabolic diseases reported that more than 9 million Chinese above the age of 18 years are suffering from diabetes due to exposure to artificial light.This number will increase with the increase in population and urbanization. In China people from eastern coastal cities have higher exposure to night light.The incidence of diabetes was 28% higher in people living high