Food Science More Power To You! The Energy in Food

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Food Chain The series of processes by which food is grown or produced, sold and eventually consumed 3 Copyright © Texas Education Agency, All rights reserved.

4 Sun supplies light Producers produce food Consumers herbivore - eats only plant carnivore - eats other animals omnivore - eats both plants and animals Decomposers bacteria and fungi Copyright © Texas Education Agency, All rights reserved.

How Does Food Provide Energy? 5 In nutrients Carbohydrates Fats Protein Calorie A unit of energy supplied by food Copyright © Texas Education Agency, All rights reserved.

Energy and Food Energy Requirements Body Mass Index 6 Copyright © Texas Education Agency, All rights reserved.

Energy Requirements 7 Adults (18 to 64 years) 2 ½ hours each week Children and adolescents (6 to 17 years) 60 minutes or more each day Young children (2 to 5 years) No specific recommendation but should be active each day Source: ChooseMyPlate.gov Copyright © Texas Education Agency, All rights reserved.

Energy Imbalances 8 Same amount of calories + same amount of activity = energy balance Weight is maintained More calories – less activity = energy imbalance Could lead to weight gain Copyright © Texas Education Agency, All rights reserved.

Body Mass Index 9 BMI - A ratio that allows you to assess your body size in relation to your height and weight Formula: weight (lb) / [height (in)]2 x 703 calculate BMI by dividing weight in pounds (lbs) by height in inches (in) squared and multiplying by a conversion factor of 703 Copyright © Texas Education Agency, All rights reserved.

Finding A Balance 10 (click on link) (image from video) Copyright © Texas Education Agency, All rights reserved.

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References and Resources Images: Shutterstock™ images. Photos obtained with subscription. (Slides 1, 5, 6, 7, 8, 9, 11) Textbooks: Duyff, R. L. (2010). Food, nutrition & wellness. Columbus, OH: Glencoe/McGraw-Hill. Food for today. (2010). Woodland Hills, CA: McGrawHill/Glencoe. Mehas, K. Y., & Rodgers, S. L. (2002). Food science: The biochemistry of food and nutrition. New York, NY: Glencoe/McGraw-Hill. Websites: ChooseMyPlate.gov Physical activity is important for everyone, but how much you need depends on your age. Healthy Weight - it's not a diet, it's a lifestyle! When it comes to weight loss, there's no lack of fad diets promising fast results. But such diets limit your nutritional intake, can be unhealthy, and tend to fail in the long run. Video: Finding Balance More than one third of U.S. adults are obese. Weight gain occurs when you consume more calories than your body uses. Reaching and maintaining a healthy weight will help you prevent and control many diseases and conditions. The key is FINDING A BALANCE in your lifestyle that includes healthy eating and regular physical activity. Copyright © Texas Education Agency, All rights reserved.