In this parallel randomized controlled trial, 70 hypertensive men and women with type 2 diabetes will be recruited from Institute of Endocrinology & Metabolism of Iran University of Medical Sciences. The subjects will be 35-65 years old with established and stably-treated type 2 diabetes mellitus for at least 1 year. Inclusion criteria are BMI≤40 kg/m2, HbA1C<9%, Blood pressure ≥ 130/80 mmHg and no regular use of any drugs or supplements with antioxidative (β-carotene, vitamins C or E) or lipid-lowering properties. All volunteers will either life-long nonsmokers or reported smoking abstinence of at least 5 years before study and they also will not use alcohol and drugs. Exclusion criteria are being allergic to chocolate, congestive heart failure, malignancies, chronic kidney, hepatic and thyroid diseases, severe cardiac arrhythmias, inflammation, using insulin, following vegetarian or weigh-reducing diets. Participants enrolled for the study would be allowed to continue their normal, daily lifestyle and eating habits. Prior to the study, the subjects will be required to complete 3-days 24-hour dietary recall and Diets will be analyzed for calorie, macronutrients and antioxidant content. Participants will consume 25 g daily of either white chocolate (without flavanol) or dark chocolate (with flavanol) for 8 weeks. Blood samples will be obtained after an overnight fasting before and after the study. All anthropometric and physical activity variables and blood pressure will be measured both before and after the trial and also Serum lipids, ApoB, ApoA-1, hsCRP , fasting blood glucose ,HbA1c and blood were measured at baseline and after 8 wks.