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Understanding Calories: Energy and Portion Control

Learn about calories, energy, and portion sizes in nutrition. Discover why we need calories, how many we need, and the impact of too few or too many. Find out how to calculate and manage calories for a healthy lifestyle.

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Understanding Calories: Energy and Portion Control

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  1. Nutrition: Part 1 Calories & Portion Sizes Mandek Richardson STARS University of South Florida

  2. Calories • What is a calorie? • A calorie is a scientific way of measuring energy.

  3. Review Time • Do you remember what energy is? • Energy is the ability to do work or to move an object

  4. Calories • Why do we need calories? • We need energy in order for our body to stay active and to perform necessary functions like breathing, digestion, etc.

  5. Calories • How many calories do we need to stay alive?

  6. Calories • What happens when you eat too little or too many calories Not enough calories you lose weight Too many calories you gain weight

  7. Calories • How many calories would you need to cut to lose 1 pound of fat? Answer: 3500 calories

  8. Calories • How do scientist define calories? • A calorie is the energy needed to raise the temperature of 1 gram of water by 1 degree Celsius

  9. Calories How would you calculate the number of calories in cheese curls? Hint you will need this

  10. Calories/Energy/Work How much energy does this piece of chocolate contain? It contains 26 calories That’s enough energy to lift an SUV over 6 feet in the air!

  11. Do all food measure up?

  12. Eat This Not That! • 1 gram of carbohydrates = 4 calories • 1 gram of protein = 4 calories • 1 gram of fat = 9 calories

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