The macronutrient called "fat" comes in many varieties. Here is what they have in common: they are 9 calories per gram. They come in vegetable varieties, animal varieties, and yes, man-made varieties. So, what kind of fat burns fat?
Think of it this way. A fat in an animal has already gone through that animal's processes and has become fat cells within a body. How do you think your body sees something so fatty that it is predetermined as extra weight on another animal? These fats are called saturated fats. They are usually the artery-plugging type that don't do a whole lot for you. The exception would be fat from fish. These lean little plant eaters create more good-for-you fats that actually FIGHT the cholesterol from saturated fats! The fish oil goes under the same category as the vegetable oils, plus the benefit of Omega-3 fatty acids. Omega-3s are linked to a reduction in diabetes and heart disease.
Then, there are fats that come from vegetables: olives, avacados, grapeseeds, and flaxseeds. These fats are called unsaturated fats, and the body processes these fats very well. Monounsaturated fats, like olive oil, are the healthiest kinds of fats to drizzle over your food because they, like fish oils, attack bad fats that get stuck in the arteries. Now, keep the whole calorie thing in mind and DON'T over do it! Using a sprayer for oils can keep the amounts low while packing on flavor and getting the health benefits of the oil.
The other source of Omega-3? Good nuts. Enjoy a serving or two of RAW, UNSALTED walnuts or almonds every day for a serving of Omega-3 fatty acids, calcium, and vitamin D.
Now, for the ugly side of fats. It was discovered many years ago that in order to increase the shelf life of fast food and prepackaged food, that unsaturated fats can be given an extra hydrogen molecule. These would become man-made fats, called trans fats or partially-hydrogenated fats. This is NOT food, and the body does not see it as such. Any amount of partially-hydrogenated oil should be seen as the enemy and should be avoided. It causes immediate inflammation in the body because it is not recognized as a food, and it goes straight to the arteries. The body can not process or expel it because it is unrecognizable. Trans fats have become the bad guy to nutritionists and doctors, finally to lawmakers, and eventually to food manufacturers. Trans fats are actually illegal in some states. Fast food restaurants have gone back to natural oils, as have many pre packaged foods. There is no reason for partially hydrogenated anything to go in to your body. Consider it a poison and do not purchase any product with these. There are plenty of other options!
Poly and Mono UNsaturated fats=the good
Saturated fats=the bad
Partially hydrogenated ANYTHING=the UGLY