This thesis is an investigation of the efficacy of combining a low glycemic index (GI) diet with a low fat, moderate carbohydrate diet with regular exercise on risk factors for cardiovascular disease (CVD) in adults with Metabolic Syndrome (MetS). This was a 12 week intervention that consisted of 3 weekly exercise sessions and a low fat diet with a 2:1 carbohydrate to protein ratio. Compared to the high GI group, the low GI group experienced a greater reduction in the number of subjects classified with MetS, and a significantly greater change in body mass index, percent body fat and hip circumference. This group attended more exercise sessions, and had significant improvements from baseline in waist circumference, blood pressure, triglyceride levels, strength and exercising heart rate. This suggests that individuals following the low GI intervention will experience greater improvements in CVD risk factors than individuals following the high GI intervention.