To study the impact of duration of diabetes, adjustment for age, hypertensive state, HbA and LDL-C were done and the impact of duration of diabetes on the risk of micro-and macro vascular complication remained, with the highest odds ratio in patients having diabetes for longer than 20 year comparing to patients having diabetes for less than 5 years, with odds ration of2.1,5.9,2.2 and 1.5 for DN,DR,CAD and stroke respectively. Moreover,the impact of diabetes duration on risk of having complications continued without plateau