LFIT5 - Nutrition Basic principles of nutrition Diet refers...

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Nutrition Basic principles of nutrition Diet refers to food selection Nutrients serve three major roles o Growth, repair, and maintenance of all body cells o Regulation of body processes o Supply of energy for cells Some nutrients can be made by the body Essential nutrients o Must be supplied by the individual’s diet 3 essential nutrients o Carbs- (CHO) provide body with energy While body will run off fat and protein, CHO is preferred source of energy 55% of total calories intake should be accounted by CHO Classified into: Simple (sugar) o Glucose (blood sugar) is needed to fuel cells o Fructose (fruit sugar) occurs in honey o Lactose (milk sugar) o Sucrose (table sugar) o Must be careful not to consume too much in diet Complex (starch, glycogen, fiber)
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o Starches Found in cereals, grains, potatoes Broken down during digestion into glucose units and stored as glycogen Glycogen is stored in the liver and muscles
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