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Margarine is a combination of plant oils that undergoes a chemical process known as partial hydrogenation. It is partial because if the process was fully carried out the product would likely be solid at room temperature as well as being very unhealthy. Partial hydrogenation leaves a mixture of unsaturated fatty acids that are mostly good for you. However an unfortunate byproduct of the partial hydrogenation, trans fat, will always be present in trace amounts and nearly impossible to remove. Trans fat tends to be solid at room temperature as well and can easily cling to the walls of your arteries as if it were saturated fat. However since trans fat molecules are not usually found in nature, the body has a difficult time digesting them and as a result trans fat easily builds up in the arteries as opposed to the saturated fats which can be broken down.

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12y ago

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