All participants will visit the clinic at Weeks 1, 24, 48, 72, 96, and 144 (3 years). At each visit, participants will have a physical exam, medical history and waist/hip ratio assessment, blood collection, and an IMT test. The absolute value for carotid IMT will be compared among the 3 groups. Viral load and CD4 counts will also be measured in Group 1 and 2 participants.