 The proposed research will provide important information about the role of 2 intervention diets that provide different amounts of lean beef and meet current nutrient recommendations for the treatment of Metabolic Syndrome MetSyn, a chronic disease that is still increasing in prevalence at alarming rates. The experimental and diet designs will enable us to evaluate lifestyle interventions for MetSyn for persons who maintain weight, lose weight and maintain their weight loss, as is currently recommended in clinical practice. Importantly, the investigators will compare a diet high in lean beef 5 ozday which is compositionally similar i.e., energy and nutrients to the modified-DASH diet, a low beef diet which has become the Gold Standard for the management of cardiovascular disease CVD risk factors, including MetSyn. In addition, the investigators also will evaluate a moderate-high protein diet BOLD that is higher in total protein from mixed sources including lean beef, 7ozday than the BOLD diet, on CVD risk factors in persons with MetSyn. A follow-up study was conducted to assess dietary compliance in a sub-sample of the population at 12-months; participants were not informed of this end-point and additional consent was obtained. 