PE 116 Chapter Notes - Chapter 7: Calorie, Preventive Healthcare, Food Energy
19 Jun 2018
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Nutrition Concepts
● Nutrients
– Chemical compounds in food that are crucial
to growth and function; include proteins,
carbohydrates, lipids, vitamins, and minerals
● Nutrition
– The study of how people consume and use
nutrients in food
● A good diet can:
– Help sustain desirable body mass and weight
– Alleviate feelings of stress and depression
– Act as preventive medicine against disease
and infection
Why College Years Are a Nutritional
Challenge
● Most students have less-than-optimal eating
habits.
● College life presents obstacles to good nutrition.
– Time and money pressures
– Lack of home-cooking facilities
– Poor personal habits and attitudes about food
– Emotional stresses
What Are the Main Nutrients in Food?
● Essential Nutrients
– What we need to obtain from food for normal
body functioning
– Water, proteins, carbohydrates, lipids,
vitamins, and minerals
– Measures: calories, Calories, and kilocalories
● Energy released by the body is measured in
calories (lowercase).
● A larger measure used by nutritionists is kilocalories (kcal) or Calories
(uppercase).
● 1 Calorie or kilocalorie = 1,000 calories
● In common usage, "calories" refers to food energy
in general.
Proteins
● Biological molecules composed of amino acids
● The "building blocks" of bodily structure and function
