 Laboratory Tests At the beginning and at the end of the study, blood will be drawn for measurement of hemoglobin, hemoglobin A1c, creatinine, liver function tests, highly sensitive c-reactive protein hsCRP and lipid profile including total cholesterol high density lipoprotein HDL and triglycerides TG. LDL will calculated. Five cc of plasma will be preserved in -70oc for future evaluation of oxidative stress oxLDL, MDA and NO. 