docj077 said:
Lipid peroxidation can be accomplished by the human body. However, it's a process that you want to avoid as saturated fatty acids fit together better and allow for greater plaque formation.
Docj, I'm a little confused by that statement!
I'm unaware of any actual
need for fatty acids to be oxidized in the human body, except when they're "burned" for energy in the mitochondria. Also, saturated fatty acids at least are more resistant to oxidation than unsaturated ones, and oxidized LDL particles are more and more being considered to be the first step in the atherogenic process.
What's confusing me the most is that you mention oxidation in the first sentence, but saturation/unsaturation in the second sentence.
docj077 said:
Vitamin E prevents such peroxidation. As for saturated fat being required, that is actually not true. Certain fat soluble vitamins actually require unsaturated fat in order to be properly absorped.
I've never heard such a claim (that the degree of saturation/unsaturation has anything to do with it). In fact, I heard about a study that was reported in my local newspaper many years ago which recommended that you NOT take vitamin E along with vegetable oils, because the vitamin E could supposedly be "carried out of the system" by the oils (no, they didn't elaborate on that, and even at the time, I thought that was a rather odd-sounding claim).
docj077 said:
Also, if I remember correctly, all the essential fatty acids are unsaturated.
Yes. There aren't any saturated fatty acids which are essential to human nutrition. If I remember correctly, the three essential ones are the following:
linoleic acid (two carbon double-bonds)
alpha-linolenic acid (three carbon double-bonds)
arachidonic acid (four carbon double-bonds [??])