Study Details: Fasting blood samples are obtained at screening, week -2, 0, 2, 4, 8, 10 and 12 of each study period for glucose, lipids and oxidation products. HbA1c will be assessed on all visits except week 2. Twenty-four hour urine for urinary C-peptide, isoprostane, urea, creatinine and electrolyte analyses will be obtained immediately prior to the beginning of the study and at the end of the 12 week treatment. At weeks 0 (baseline) and 12, endothelial function will be assessed. Following the 12 week treatment period, subjects who wish to undertake the alternate treatment will be given appropriate instruction.