<qa>  What is the cholesterol tracer?VISIT 4 Day 46 7 days: Subjects will report fasting to GCRC at 8 AM. The subject will consume Carnation Instant Breakfast with a cholesterol tracer Cholesterol D5. Subjects will be asked to maintain same dietary restriction as visit 2. Subjects will be sent home with a urine jug to collect 24-hour urine on day 3. Subjects will start food diary on day 47 and 48. 