We need natural saturated fat in our diets. The important phospholipids that form the membranes in all of our cells are made of mostly (half or more) saturated fatty acids. This is especially true for parts of our brains where more than 80 percent of the phospholipids carry half of their fatty acids as saturated fatty acids.
When it comes to our lungs, the very important phospholipid class called lung surfactant is a special phospholipid with 100 percent saturated fatty acids. It is called dipalmitoyl phosphatidylcholine and there are two saturated palmitic acid molecules attached to it. When people consume a lot of partially hydrogenated fats and oils, the trans fatty acids are put into the phospholipids where the body normally wants to have saturated fatty acids and the lungs may not work effectively. Some research has suggested that trans fatty acids are causing asthma in children.
Recent research shows that having enough saturated fat prevents
stroke; and to
protect our kidneys from disease, research shows we need certain kinds of saturated fatty acids, which are found only in the natural fats such as animal fats and coconut and palm kernel oils.
Mary G. Enig, PhD is the author of Know Your Fats: The Complete Primer for Understanding the Nutrition of Fats, Oils, and Cholesterol, Bethesda Press, May 2000. Order your copy here:
www.enig.com/trans.html.
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