- Current alcoholism or drug addiction/substance abuse. Note: Alcohol use during the study is allowed provided "routine" daily consumption is less than or equal to 2 units/day (1 unit is the equivalent of 12 oz. of beer, 5 oz. of wine, or 1.5 oz. of 80-proof distilled spirits [or equivalent]) and except that no alcohol consumption is allowed within 48 hours prior to blood collections for analysis of lipid profiles