Chapter 1. General Principles. Energy Units calorie - basic unit of heat kilocalorie - 1000 calories Calorie - same as kilocalorie.

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Presentation transcript:

Chapter 1. General Principles

Energy Units calorie - basic unit of heat kilocalorie calories Calorie - same as kilocalorie

Function of Food Growth and development Energy –Carbohydrates –Fats –Protein Regulation of metabolism –Vitamins –Minerals –Proteins

Nutrients Caloric Nutrients –Carbohydrates: 4 kilocalories/gram –Fats: 9 kilocalories/gram –Proteins: 4 kilocalories/gram –(Alcohol: 7 kilocalories/gram) Non-Caloric Nutrients –Vitamins –Minerals –Water

Essential Nutrients Required for normal growth, health, survival. Not synthesized in the body at levels required for normal growth, health, survival. Must be consumed in diet.

Nutrient Requirement Standards Dietary Reference Intake (DRI) –Estimated Average Requirement (EAR) –Recommended Dietary Allowance (RDA) EAR ± 2 SD –Adequate Intake (AI) –Tolerable Upper Intake (UL)

Factors Affecting Nutrient Standards Country Gender\ –lactation Age

Food Label with Daily Values. 1) Better by Design How to recognize the new food labels. 2) Size Up the Situation All serving sizes are created equal. 3) Look Before You Leap Use the Daily Values. 4) Rate It Right Scan the % Daily Values. 5) Trust Adjectives Descriptions have legal definitions. GOOD SOURCE OF FIBER LOWFAT 6) Read Health Claims with Confidence The nutrient link to disease prevention. Many factors affect cancer risk. Eating a diet low in fat and high in fiber may lower risk of this disease.