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How fat is used in the body?

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When carbohydrates are scarce, the body runs mainly on fats. If energy needs exceed those provided by fats in the diet, the body must liquidate some of its fat tissue for energy. While these fats are a welcome source of energy for most of the body, a few types of cells, such as brain cells, have special needs. read more

By Stephanie Dutchen Posted December 15, 2010. It's common knowledge that too much cholesterol and other fats can lead to disease, and that a healthy diet involves watching how much fatty food we eat. However, our bodies need a certain amount of fat to function—and we can't make it from scratch. read more

Some of the fat gets used for energy right away. The rest is stored inside cells in blobs called lipid droplets. When we need extra energy—for instance, when we run a marathon—our bodies use enzymes called lipases to break down the stored triglycerides. read more

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