Type 2 Diabetes Mellitus(T2DM) is progressing rapidly over the course of the past few years more and with its possible association with obesity which is also on the rise , there are multiple complications affecting the health of the individual such as sleep which is of paramount important for our regular day to day functioning , so we need to assess and analyse these factors. 1. To conduct a study and assess the sleep amongst patients suffering from type 2 diabetes mellitus 2. To assess any complications affecting sleep amongst these patient A cross sectional study was conducted over a period of 3 months from March to May 2020 for 100 patients coming to a tertiary care hospital at Saveetha medical college and hospital ,Thandalam, Kanchipuram district ,Chennai ,Tamil Nadu .The analysis was done using excel sheet and spss software. In this study , a 100 people were assessed for their knowledge , attitude and practice towards the quality of sleep and complications of patients seen suffering from T2DM . Patients above the age of 40 were found to suffer from the complications of T2DM which was also affecting their sleep. The general attitude and practice of those patients from lower socioeconomic status was not satisfactory and had higher incidence of complications. Obesity plays a big role in development of TD2M and associated Obstructive sleep apnea and other complications. To bring more awareness and guidance to the patients who are suffering from T2DM what symptoms to look out for and best practices to follow such as regular blood check ups and advice them the importance of sleep , proper exercise regularly and a good nutritious diet.