Cholesterol Essay

911 WordsJul 26, 20144 Pages
Cholesterol, the good, the bad and the ugly! By: Alejandra Quinonez Unit 2 Assignment Professor Alvaro Genao Lipids are a group of organic compounds that make up 18-25% of body mass in lean adults (Tortora, G. 2014). Lipids contain carbon, hydrogen, and oxygen. There are various types of lipids fatty acids, triglycerides, phospholipids, steroids, eicosanoids, carotenes, and vitamins A, D, E, and K. Lipids, also known as fats, play many important roles in our body, from providing energy to producing hormones. We wouldn't be able to digest and absorb food properly without lipids. Eating more fat than we need can lead to weight gain, but in proper amounts lipids are could be a healthy part of a diet. The body can synthesize most of the fats it needs from the diet. Two essential fatty acids, linolenic and linoleic acid, cannot be synthesized in the body and must be obtained from food. Our bodies don’t create Omega-3 and Omega-6 fatty acids they are created by the food we eat. These fatty acids can build healthy cells, maintain brain and nerve function, and help lower the risk of heart disease. Some studies suggest these fats may also protect against type 2 diabetes, Alzheimer’s disease, and age-related brain decline (July 11, 2014). Omega-6 mostly comes as linoleic acid from plant oils such as corn oil, soybean oil, and sunflower oil, as well as from nuts and seeds (July 11, 2014). Omega-3s come primarily from fatty fish such as salmon, mackerel, and tuna, as well as from walnuts and flaxseed (July 11, 2014). The plasma membrane is selectively permeable to ions and organic molecules and controls the movement of substances in and out of cells. The basic function of the cell membrane is to protect the cell from its surroundings. Some lipids can cross the plasma membrane others cannot. Cholesterol is a type of lipid needed to produce important steroid hormones

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