Originally Posted by college_cook
I'm fairly certain that trans fat is considered an LDL- Low-Density Lipoprotein, more commonly known as "bad cholesterol". As their name implies, LDLs weigh very little, and as such, are more easily carried by the blood, and therefore have greater chance to stick to your artery walls. So while it may be metabolized as a saturated fat, metabolism really only deals with the conversion of nutrients into an enrgy source usable by your body. Trans fatrs may be healthier in regards to metabolism. However, they will most certainly clog your arteries faster than saturated fats.
Actually - no. Trans Fats are considered saturated fats. Saturated fats stimulate the body to produce
cholesterol. Monounsaturated fats help lower the levels of LDL and VLDL (bad cholesterol) and don't mess with the "good guy" HDL; Polyunsaturated fats lower both the bad LDL and the good HDL. This is why olive oil is a good fat ....it is low in saturated fat (cholesterol producer), high in Monounsaturated fat (reduces the bad cholesterol and leaves the good cholesterol lowering stuff alone) and low in Polyunsaturated fats (that reduce both the HDL along with the LDL).
Humm ... simple explanation ... the LDL/VLDL is like cholesterol "litter bugs" leaving it around in the blood vessels and arteries - and the HDL is is like the highway "cleanup" crew that comes along and picks it up and hauls it off to the dump.
Trans Fats are like kids in Halloween costumes behaving badly. While they are "chemically" still unsaturated fats ... their costume conversion from CIS to TRANS configuration causes them look and act like saturated fats - stimulating cholesterol production- but they are still the same kids. Apparently, hydrogenation transforms mono fats (good guys) easier than poly fats (bad guys because they also lower the good HDL). Straightening a kid out is good - but straightening a chain of fatty acids out is bad.
So, no matter how you want to spin it ... trans fat is basically just unsaturated fat that, in the body, acts like saturated fat. Although, I do admit that you would need to know the percentage of TRANS conversion of mono and poly unsaturated fats to begin to make some calculations on the affects to LDL and HDL levels .... I couldn't find a good "scientifically sound" source.
alluded to something earlier ... ingested cholesterol is processed differently than the fatty acids. And, although not generally mentioned, even fats from plant sources (corn oil, olive oil, cannola oil, etc.) contian some cholesterol .... just generally less than 1% of that from animal sources - so it gets written off as 0% according to the "rounding" and "volume % limits" of labeling laws.
- The new "Trans Fat Free" Crisco still has trans fat. To be honest I don't know what method they used to come into labeling compliance to make that claim. I did find something on their website a couple of months ago that talked about it ... where they admitted it really wasn't 100% trans fat free ... but they didn't go into details other than talk about labeling laws.
- Olive oil is very healty. It is very low in saturated and polyunsaturated fats - and very high in monounsaturated fats.
- Yes, we have learned some things. We learned that if you ate more than two eggs a week you would die ... and then we learned that wasn't true after all. The truth is ... food is finally being given some serious interest. Sometimes the results are "bad science" and "hysterical" reaction ... which makes it even tougher for good science to be accepted.
Trans Fats are as evil as Saturated Fats. The labeling laws in the US are probably even more evil.