Objective: Diabetes mellitus is a major problem worldwide which has increased near to four times in the last three decades. Non adherence to the diet and exercise is a major problem in the control of the condition and its complications. Method: This was an observational study. The sample size was comprised of total 290 participants. Data was collected as per a set of questions related to non adherence to diet and exercise. Results: The main causes for non adherence to dietary habits are poor self discipline and Lack of information. The main causes for non adherence to exercise are lack of partner for exercise and lack of information regarding the recommended exercise. Conclusion: Efforts are needed to counsel the patients with treatment so that they shall adhere to the recommended lifestyle modification for the proper management of the disease and will reduce the complications and the economic burden as well.