Cross-sectional studies have been used in describing general and clinical characteristics of different type of diabetes such as Insulin Dependent Diabetes Mellitus, Non Insulin Dependent Diabetes Mellitus and Gestational Diabetes.  This method of study has been widely used in describing a patients clinical, demographic, and family history, as well as exercise, diet, habits, life style, and the glucose metabolism  of subjects morbidities and mortalities with and without diabetes.  It helps to understand the potential risk factors such as socio-economic status, age at onset, seasonal characteristics as well as the pattern of disease.