Chapter 1 - Chapter 1: The Role of Nutrition in Our Health...

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Chapter 1: The Role of Nutrition in Our Health What is Nutrition? Nutrition is the science that studies food and how food nourishes our bodies and influences our health Encompasses how we: Consume Digest Metabolize And store nutrients How these nutrients affect our bodies Early research in nutrition focused on making the link between nutrient deficiencies and illness Why is Nutrition Important? The substances you take into your body are broken down and reassemble into your brain cells, bones, muscles---all of your tissues and organs. Foods you eat provide your body with the energy it needs to function properly Nutrition is One of Several Factors Contributing to Wellness Wellness: a multidimensional, lifelong process that includes: Physical Emotional And spiritual health A Healthful Diet Can Prevent Some Diseases and Reduce Your Risk for Others Ample food supply and fortifying foods with nutrients have ensured that the majority of nutrient deficiency diseases are no longer of concern in developed countries Major problems in many developing nations Nutrition is strongly associated with four chronic diseases that are among the top 10 causes of death in the US: Heart disease Cancer Cerebrovascular disease (causes strokes) Type 2 diabetes What Are Nutrients? Chemicals found in foods that are critical to human growth and function. Contains 6 groups: Carbohydrates Fats and oils Proteins Vitamins Minerals Water Organic: a substance or nutrient that contains the element carbon. Inorganic: a substance or nutrient that does not contain carbon. Carbohydrates, Fats, and Proteins Are Nutrients that Provide Energy
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Chapter 1: The Role of Nutrition in Our Health Macronutrients: nutrients that our bodies need in relatively large amounts to support normal function and health. Carbs are a Primary Fuel Source Particularly for our brain and for physical exercise Composed of chains of carbon, hydrogen, and oxygen Fats Provide Energy and Other Essential Nutrients Important energy source for our bodies at rest and during low-intensity exercise Composed of carbon, hydrogen, and oxygen o Contain less oxygen and water than carbs o Allows them to pack together tightly Provide fat-soluble vitamins and essential fatty acids Cholesterol is a form of lipid that our bodies can make independently --- can also be
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Chapter 1 - Chapter 1: The Role of Nutrition in Our Health...

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