Chapter 9

Nutrition

Lesson 1Nutrients Your Body Needs

Building Vocabulary

nutrientsSubstances in foods that your body needs to grow, have energy, and stay healthy

nutritionThe process of taking in food and using it for energy, growth, and good health

proteins The nutrient group used to build and repair cells

carbohydrates The nutrient group used to build and repair cells

LESSON 1

Nutrients Your Body NeedsBIG IDEA Each nutrient plays a specific role in keeping your body healthy.

Lesson Home

Building Vocabulary

fiberA complex carbohydrate that the body cannot break down or use for energy

fatsNutrients that promote normal growth, give you energy, and keep your skin healthy

saturated fats Fats that are usually solid at room temperature

trans fatty acidsA kind of fat formed when hydrogen is added to vegetable oil during processing

LESSON 1

Nutrients Your Body NeedsBIG IDEA Each nutrient plays a specific role in keeping your body healthy.

Lesson Home

Building Vocabulary

unsaturated fats Fats that are usually liquid at room temperature

cholesterolA waxy, fat-like substance that the body uses to build cells and make other substances

vitamins Compounds that help to regulate body processes

mineralsSubstances the body uses to form healthy bones and teeth, keep blood healthy, and keep the heart and other organs working properly

LESSON 1

Nutrients Your Body NeedsBIG IDEA Each nutrient plays a specific role in keeping your body healthy.

Lesson Home

Understanding Nutrients

nutrients Substances in foods that your body needs to grow, have energy, and stay healthy

nutrition The process of taking in food and using it for energy, growth, and good health

LESSON 1

Nutrients Your Body NeedsBIG IDEA Each nutrient plays a specific role in keeping your body healthy.

Nutrients provide the building blocks needed to grow and to repair your body. Learning about nutrients, and nutrition can help you make more healthful choices about the foods you eat.

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New Vocabulary

New Vocabulary

Understanding Nutrients

Helps the body build new tissue

Helps the body repair damaged

cells

Helps the body

produce energy

LESSON 1

Nutrients Your Body NeedsBIG IDEA Each nutrient plays a specific role in keeping your body healthy.

Lesson Home

Proteins

proteins The nutrient group used to build and repair cells

LESSON 1

Nutrients Your Body NeedsBIG IDEA Each nutrient plays a specific role in keeping your body healthy.

Proteins help your body heal. They are made of chemical building blocks called amino acids. Foods such as meat, fish, eggs, dairy products, and soybeans provide all the amino acids your body needs.

Lesson Home

New Vocabulary

Carbohydrates

carbohydrates The starches and sugars found in foods

LESSON 1

Nutrients Your Body NeedsBIG IDEA Each nutrient plays a specific role in keeping your body healthy.

Carbohydrates are your body’s main source of energy. About 45 to 65 percent of your daily energy needs some come from carbohydrates.

Lesson Home

New Vocabulary

Carbohydrates

Two Types of Carbohydrates

Simple carbohydrates are sugars.

Fruit

Milk

Honey

Complex carbohydrates are starches.

Potatoes

Seeds

Whole-grain cereals

LESSON 1

Nutrients Your Body NeedsBIG IDEA Each nutrient plays a specific role in keeping your body healthy.

Lesson Home

Carbohydrates

fiber A complex carbohydrate that the body cannot break down or use for energy

LESSON 1

Nutrients Your Body NeedsBIG IDEA Each nutrient plays a specific role in keeping your body healthy.

Fiber carries wastes out of your body. Eating high-fiber foods can lower your risk of heart disease and some types of cancer.

Lesson Home

New Vocabulary

Fats

fats Nutrients that promote normal growth, give you energy, and keep your skin healthy

LESSON 1

Nutrients Your Body NeedsBIG IDEA Each nutrient plays a specific role in keeping your body healthy.

Your body uses fats to build and maintain your cell membranes. Fats also carry certain vitamins in your bloodstream.

Lesson Home

New Vocabulary

Fats

Fats

Saturated Fats Unsaturated Fats

Plant foods such as olive oil, nuts, and avocados

Butter, cheese, fatty meats

LESSON 1

Nutrients Your Body NeedsBIG IDEA Each nutrient plays a specific role in keeping your body healthy.

Lesson Home

Cholesterol is a fatty substance found in the blood.

LDL (low-density lipoprotein) HDL (high-density lipoprotein)

Collects on the walls of arteries and forms plaque Removes LDL from the arteries

Known as “bad cholesterol” Known as “good cholesterol”

Eating too much saturated fat can increase the body’s level of cholesterol.

Cholesterol

LESSON 1

Nutrients Your Body NeedsBIG IDEA Each nutrient plays a specific role in keeping your body healthy.

Lesson Home

Vitamins and Minerals

Vitamins and minerals are essential to your body’s health.

vitamins Substances that help your body fight infections and use other nutrients, among other jobs

minerals Elements that help form healthy bones and teeth, and regulate certain body processes

LESSON 1

Nutrients Your Body NeedsBIG IDEA Each nutrient plays a specific role in keeping your body healthy.

Lesson Home

New Vocabulary

New Vocabulary

Vitamins and Minerals

Vitamins

Water-Soluble Fat-Soluble

Not stored in the body Stored in the body

Must be consumed regularly Stored in the body’s fat until they are needed.

The best way to get vitamins and minerals is to choose nutritious foods.

LESSON 1

Nutrients Your Body NeedsBIG IDEA Each nutrient plays a specific role in keeping your body healthy.

Lesson Home

LESSON 1

Nutrients Your Body NeedsBIG IDEA Each nutrient plays a specific role in keeping your body healthy.

Lesson Home

Water

Water

Helps digest and absorb food.

Regulates body temperature and blood circulation.

Carries nutrients and oxygen to cells.

Removes toxins and other wastes.

Cushions joints.

Protects tissues and organs from shock and damage.

LESSON 1

Nutrients Your Body NeedsBIG IDEA Each nutrient plays a specific role in keeping your body healthy.

Lesson Home

Dehydration is a lack of water in the body.

Teen girls should drink about nine cups of water per day and teen boys should drink about 13 cups of water each day.

Water

LESSON 1

Nutrients Your Body NeedsBIG IDEA Each nutrient plays a specific role in keeping your body healthy.

Lesson Home

Vocabulary Define the term nutrition. Use it in an original sentence.

Lesson 1 Review

LESSON 1

Nutrients Your Body Needs

After You Read

Lesson Home

Lesson 1 Review

LESSON 1

Nutrients Your Body Needs

Identify Name the six categories of nutrients.

After You Read

Lesson Home

Lesson 1 Review

Explain How do vitamins help your body?

LESSON 1

Nutrients Your Body Needs

After You Read

Lesson Home

Lesson 1 Review

LESSON 1

Nutrients Your Body Needs

Hypothesize How can the foods you choose to eat today affect your health in the future?

Thinking Critically

Lesson Home

Accessing Information Research foods that are high in fiber. Identify at least three foods that are high in fiber. Then find all of the high-fiber foods in your house. How many foods did you find? Is your family eating enough high-fiber foods?

Lesson 1 Review

LESSON 1

Nutrients Your Body Needs

Thinking Critically

Lesson Home

Practicing Healthful Behaviors Study your school’s weekly lunch menu. Find the most healthful food choices. Then make a plan to include these healthful choices in your daily diet.

Lesson 1 Review

LESSON 1

Nutrients Your Body Needs

Applying Health Skills

Lesson Home

Chapter 9

Nutrition

ENDLesson 1Nutrients Your Body Needs