The objectives is to compare the changes in body composition (primary objective), diabetes parameters, energy expenditure and energy intake between Insulin detemir (Levemir® - Novolin® 4 pen) and insulin glargine (Lantus® - Solostar®) both in combination with Metformin and insulin secretagogues (SU) between baseline and after 6 months of insulin therapy in 80 type 2 diabetic patients failing on oral diabetic agents .