OK - this post is a continuation of the two previous posts, with one more on the way. Let me iterate once again, I did some online research, and found a TON of material. I then consolidated it all into one long article, rewriting it here and there....and then broke it down into bite-sized pieces (4 separate postings). So, I'm posting info that wasn't exactly written completely in my own words, but why bother when it's already been done. If you go looking, like I did, you will get the same info and learn a bunch along the way. Read below to get an idea of why hydrogenated oils can make you fat.
Partially hydrogenated oils will not only kill you in the long term by producing diseases like multiple sclerosis and allergies that lead to arthritis, but in the meantime they will make you fat!
You Eat More
It's not like you have any choice in the matter. Remember that the essential fatty acids are vital to every metabolic function in your body. You will get the quantity of essential fatty acids that you need to sustain life, no matter what. You will not stop being hungry until you do.
If you are consuming lots of saturated fats, you really have no choice but to become fat, because saturated fats contain only small quantities of the polyunsaturated fats that contain the essential fatty acids you need. The key to being thin, then, is to consume foods containing large amounts of polyunsaturated oils. (Those foods include fish, olives, nuts, and egg yolks.) Over the long term, those foods remove your sense of hunger.
Partially hydrogenated oils make you gain weight the same way that saturated fats do -- by making you consume even more fat to get the the essential fatty acids you need. But partially hydrogenated fats are even worse. Not only do they produce disease over the long term, but they interfere with the body's ability to ingest and utilize the good fats!
Picture it like this. The trans fats are now the guards along the watchtower. The essential fatty acids (the support troops) are waiting outside to get into the fort (the cell), so they can be distributed along the watchtower (the cell wall). But the guards won't let them in! So they have to find someplace to stay in town. Over time, more and more troops are finding lodging in town. So new houses (fat cells) have to be built to keep them in. The town grows more and more swelled with troops (fat), and it gets bigger and bigger (fatter). It's not a pretty picture at all, when you realize that the town is your belly, buns, face, and neck.
Your Metabolism Slows
Worse, most partially hydrogenated oil is partially hydrogenated soybean oil. That's a problem, because soybean oil depresses the thyroid--which lowers your energy levels, makes you feel less like exercising, and generally makes you fatter!
Of course, soybeans have been used for centuries in the Orient--but mostly as the basis for soy sauce and tofu. Asians didn't have soy milk, soy burgers, soy this and soy that. Most of all, they never used concentrated essence of soybean, in the form of soybean oil. And they didn't hydrogenate it, and they didn't use it in everything.
Walking down supermarket aisles in America, you find product after product with partially hydrogenated oil--often in products you would never expect. But why not? After all, it's cheaper than butter. And it's not illegal. Yet, when you eat out, restaurant breads and fried foods are loaded with stuff.
As a result, Americans are consuming soybean oil--partially hydrogenated soybean oil--in virtually everything they eat. It's no wonder that America is experiencing epidemic levels of diabetes, obesity, heart disease, and cancer.