<qa>  What is the name of the test that will be repeated at 3 months, 1 year and 2The investigators will measure carotid artery thickening with magnetic resonance imaging MRI; forearm blood vessel function using ultrasound; and they will perform blood tests to measure oxidation and inflammation in the blood stream and circulation stem cells that are responsible for healing. These tests will be repeated at 3 months, 1 year and 2 years after starting treatment. The investigators will also collect blood for genotyping where the DNA will be stored for future analysis to study whether subjects genotype alters their susceptibility to treatments. The investigators hypothesis is that ARB treated individuals will have less oxidation and inflammation, higher levels of stem cells, and a slower progression of arterial thickening. 