 VISIT 5 Day 49 7 days: Subject will bring the urine jug and food diary back for analysis and that same day will have blood 40ml collected for evaluation of tracers, lipid panel, Apo A1, Apo B 100, ALT, CPK, plasma and serum stored for sterol analyses by GC. Same day, weight, waist and hip circumference will be measured again. Food diary will be reviewed by bionutritionist. Subjects will be asked to bring back pill bottles also for pill count. Simvastatin or ezetimibe will be stopped for 4 weeks. 