Is the reduction of cholesterol by vegetable oils actually caused by their peroxidation?
By chance, I looked at an older study from 2004 , which shows that oxidative stress affects the export of fats from the liver in the form of VLDL particles. Imagine that each lipoprotein particle VLDL/LDL contains exactly one molecule of the ApoB100 protein, so they are absolutely essential for the export of fats from the liver. So we already have three essential products needed for successful fat export from the liver, i.e. oleic acid, H2O2 , and ApoB100. We obtain oleic acid from food or from saturated fats through the slow process of DNL. With a relatively low-fat diet, this is not a problem. Saturated fats, when in excess, also produce enough H2O2 to activate the enzymes synthesizing VLDL. What about ApoB100? It is also easily produced. But the study tells us that there is a system that controls the quality of exported fats in VLDL particles. If peroxidized polyunsaturated fats are present, the enzymatic system PERPP degrades ApoB100 molecules and no VLDL particles can be exported,...