<prompt> Answer this question truthfullyWhat dietary therapy is recommended for metabolic syndrome?  <response>: <reason> SOURCE and YEAR: J Am Coll Cardiol, 2011 OBJECTIVE: Effect of a Mediterranean diet on metabolic syndrome and its components.METHOD: Meta-analysisSTUDY POPULATION: 50 original research studies 35 clinical trials, 2 prospective and 13 cross-sectional, with 534,906 participantsRESULTS: Mediterranean diet was associated with reduced risk of metabolic syndrome log hazard ratio: -0.69, 95 confidence interval CI: -1.24 to -1.16 Also, statistically significant reduction in waist circumference, triglycerides, systolic and diastolic blood pressure and glucose was found. Additionally, an elevation of HDL cholesterol level was demonstrated.SOURCE and YEAR: Arch Intern Med. 2008 STUDY NAME: PREDIMED Prevención con Dieta MediterráneaOBJECTIVE: Determine the efficacy of the Mediterranean die t Med-Diet on the primary prevention of cardiovascular diseaseMETHOD: Multicenter, 3-arm randomized controlled trial.STUDY POPULATION: 1224 participantsSTUDY PERIOD: 1 yearINTERVENTIONS: Quarterly education about the MedDiet provision of either 1 Lwk of virgin olive oil or 30 gd of mixed nuts, and advice on a low-fat diet control diet.RESULTS: 61.4 of participants met criteria for the metabolic syndrome 1 yr prevalence was reduced by 6.7, 13.7, and 2.0 in the MedDiet virgin olive oil, MedDiet nuts, and control diet groups, respectively After adjustment for sex, age, baseline obesity status, and weight changes odds ratios for reversion of metabolic syndrome were: 1.3 95 confidence interval, 0.8-2.1 for the MedDiet virgin olive oil compared with control group. 1.7 1.1-2.6 for the MedDiet nuts group compared with control group.CONCLUSION: A Mediterranean diet can be helpful in the management of metabolic syndrome. 