Health Sciences 1001A/B Chapter Notes - Chapter 5: Trans Fat, Essential Amino Acid, Dietary Fiber

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An area in which you have high control. Provides body with nutrients required to produce energy, repair damaged tissue, promote tissue growth, regulate physiological processes. Choosing a healthy diet involves: knowing which nutrients are necessary and in which amounts, translating those requirements into a diet consisting of foods you like and that are available / affordable. Body requires proteins, fats, carbohydrates, minerals and water (essential nutrients) Essential = must get substances from food because body is unable to manufacture them (or not enough to meet physiological needs) Energy in food expressed in kilocalories = scientific expression of energy value in a food. Three classes of essential nutrients supply energy: fat = 9 calories per gram, protein = 4 calories per gram, carbohydrates = 4 calories per gram. If all types of calories > energy expenditure = converted to fat and stored in the body. Promotes growth and maintenance of body tissue. Primary component of muscles and connective tissue.

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