Where the Problem Lies
If one eats any animal product (e.g. meat, cheese, butter), one will encounter oxidized cholesterol. Meat cannot be held in a butcher case, cooked, canned or processed in any way without oxidizing cholesterol. Milk cannot be pasteurized nor cheese allowed to age without forming oxidized cholesterol. Cholesterol is part of each muscle cell wall and is found in all animal fats. Leanness is not the issue. The highest cholesterol food listed in USDA Handbooks is turkey. It is just the nature of the beast that it contains more cholesterol in its cell membranes than most other animals.
Stop It Cold!
The plant sterols and policosanol in Cholesterol Blocker provide meaningful protection against oxidized cholesterol. The sterols (beta-sitosterol, Stigmasterol, campesterol plus lesser sterols) and "cosanols" are fatty alcohols, which cannot be absorbed by humans except in very minute amounts. In the intestine, they will combine with dietary cholesterol and secreted cholesterol in bile salts to create a new, crystalline matrix that cannot be absorbed. The compounds are then passed in feces.