NutrientNeedsx2x

NutrientNeedsx2x - Nutrient Needs What is Nutrition?...

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Nutrient Needs
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What is Nutrition? Nutrition refers to the foods we eat and how we process it. “We are what we eat” is true!! Although not in the same proportion, we are made up of the same very chemicals that we ingest.
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Six Major Classes of Nutrients Macronutrients: Carbohydrates, Proteins, Lipids Provide energy Micronutrients: Vitamins, Minerals Do not provide energy Water Does not provide energy
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Nutrient: any substance that provides nourishment to the body. Nutrients can be divided into two categories: Essential nutrients Non-Essential Nutrients
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Essential Nutrients Carbohydrates Lipids or Fats: Essential fatty acids: Linoleic acid (omega-6) Linolenic acid (omega-3) Proteins: Essential amino acids Fat soluble vitamins Water Soluble Vitamins Minerals
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Energy Providing Nutrients Carbohydrates, Proteins and Fats provide us with energy (calories). Energy is measured in units called Kilocalories or calories. Carbohydrates, and Proteins:4 calories/gm Fats: 9 calories/gm. Alcohol is a fermentation product of carbohydrate and provides 7 calories/gm.
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Carbohydrates Simple Sugars and Complex Carbohydrates. Simple Sugars: Monosaccharides: Glucose, Fructose, Galactose, Sucrose, Lactose, and Maltose. Disaccharides: Maltose, Sucrose, Lactose
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Complex Carbohydrates: (Polysaccharides/starch) Made of three or more sugars linked together. Plant storage forms: Amylose, Amylopectin Human/Animal storage forms: glycogen Carbohydrates are found in plant based foods such as vegetables, fruits and grains
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Carbohydrates Glycogen: is an animal starch made of glucose. It is an important source of energy in the body. Glycogen is stored in the liver and muscles. The branched structure of glycogen ensures fast release of glucose in the body. On an average, the human body stores about 300gms of glycogen that is equivalent to 1200 kcals.
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Fiber : Indigestible CHOs Insoluble Fiber (cellulose,lignins) Provides bulk, draws water Speeds waste through large intestine Sources: wheat bran, vegetables, whole-grain breads/cereals Soluble Fiber (gums, pectins, mucilages, some hemicellulose) Slows emptying from stomach = feeling of fullness Lowers blood cholesterol Sources: fruits, oats, barley, legumes
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Proteins There are 20 kinds of amino acids that are needed to make protein. - 11 non-essential aa
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NutrientNeedsx2x - Nutrient Needs What is Nutrition?...

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