Integrating Metabolic and Vascular Sensors to Monitor Cardiometabolic Disorders After Nutrition Interventions

The investigators will conduct a randomized, controlled crossover intervention study. The investigators will enroll 54 participants, aged \>18 years, BMI \>25 kg/m2 with metabolic syndrome. During the first phase, all participants will consume their habitual diet for 2 weeks to establish baseline. Then participants will be randomized to either a Mediterranean diet (MED), high-fat/low carb diet (HF/LC), or low-fat diet (LF) for 14 days with 2 weeks washout between the different diets. The wearable system will monitor basal levels and the changes for glucose, cholesterol, TG, and NO through sweat analysis and HR, HRV, and PWV for carotid arterial stiffness during each diet intervention.