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Chapter 8: Food and Nutrition


Chapter 8: Food and Nutrition Health & Physical Education Chapter 8: Food and Nutrition Carbohydrates, Fats, & Proteins Building Healthy Skills- Breaking a Bad Habit ... – PowerPoint PPT presentation

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Title: Chapter 8: Food and Nutrition

Chapter 8 Food and Nutrition
  • Health Physical Education

Chapter 8 Food and Nutrition
  • Carbohydrates, Fats, Proteins
  • Building Healthy Skills- Breaking a Bad Habit
  • Vitamins, Minerals, Water
  • Guidelines for Healthful Eating

Your body is like a car
  • A car needs gas to function properly
  • Your body needs food to function properly
  • A car needs to be driven often to function
  • Your body needs exercise to function properly

What type of car are you?
  • First what type of car would I be? Why?
  • Write a paragraph describing what kind of car you
    would be based upon your personality, body type,
    activity level.
  • Partner, describe what kind of car you think your
    partner would be.

Fuel for your body
  • When your body uses nutrients in foods, a series
    of chemical reactions occurs inside your cells.
    As a result, energy is released.
  • Metabolism chemical process by which your body
    breaks down food to release as energy.
  • A high metabolism allows your body to break down
    food fast and efficiently.
  • Ways to boost your metabolism are to eat
    breakfast, and eat light meals throughout the day.

Eating healthy
  • Means eating balanced meals
  • Usually 3 meals a day (breakfast, lunch, dinner)
  • A balanced meal consists of Carbohydrates (bread,
    cereal, rice, pasta) Vegetables (bacilli,
    lettuce, celery, karats, peas, corn) Fruits
    (apples, bananas, peaches, grapes, pairs,
    oranges) Protein (fish, meat, chicken, nuts,
    eggs) Dairy products (milk, yogurt, cheese) and
    small amounts of fats, oils, and sweats

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What are calories?
  • Calories measured in units by the amount of
    energy released when nutrients are broken down
    how we measure energy in food
  • The more calories a food has, the more energy it
    contains. For good health, the number of calories
    in the food that you eat should match the calorie
    needs of your body.

Caloric Intake and Expenditure
  • If you eat more calories than you burn you gain
  • If you eat less calories than you burn you lose
  • If you eat the same amount of calories that you
    burn your weight stays the same.

Healthy tips
  • Breakfast is the most important meal of the day
    is because it loads fuel and kick starts
  • Larger amounts of carbohydrates should be eaten
    in the morning so your body has the entire day to
    process them.
  • Food that is eaten right before bed time is
    turned into mostly fat because your body doesnt
    have time to process it before it shuts down.

Unhealthy foods
  • Fats, oils, sweats
  • Are appropriate to eat in moderation
  • A cookie for desert ok
  • 20 cookies for desert unhealthy
  • Ranch on a salad ok
  • Ranch on all foods unhealthy
  • Any form of fast food

  • Eating 3 balanced meals a day and exercising
    often are healthy habits to abduct that make your
    body look and feel great
  • These healthy habits are ways to prevent obesity,
    diabetes, heart disease, and stroke

  • Carbohydrates nutrients made of carbon,
    hydrogen, and oxygen
  • Carbohydrates supply energy for your bodys

Food and Nutrition Carbohydrates
  • Examples of Carbohydrates
  • Simple Carbs (Sugars) fruits, vegetables, milk,
    cookies, candies, soft drinks
  • Simple sugars end in ose
  • Fructose ( fruit sugar)
  • Lactose (milk sugar)
  • Sucrose (table sugar)
  • Glucose ( blood sugar)
  • Complex Carbs (Starches) potatoes, bread,
    cereal, grains, rice, oats, corn, wheat,
    tortillas, pasta, whole-wheat rolls

Food and Nutrition Carbohydrates
  • Fiber Complex carb that is found in plants.
    Necessary for the proper function of your
    digestive system.
  • Fiber helps prevent constipation, may reduce the
    risk of colon cancer, may help prevent heart
    disease because it lowers blood cholesterol
  • Two types of fiber soluble and insoluble

Soluble vs. Insoluble
  • Soluble- dissolves trapping bad cholesterol
    (LDL) and transporting it to the liver to be
    metabolized. Hence, soluble fiber lowers
    cholesterol levels.
  • Insoluble- does not dissolve the digestive
    system cannot breakdown the food any further than
    the teeth can by chewing and it cleans out the
    digestive pipes. Adds bulk to your waste.
    Example corn.

Review Quiz
  • What are two food examples of carbohydrates?
  • What are the two forms of carbs?
  • Carbohydrates are your bodys main source of?
  • Unused calories from carbs are stored where?
  • Name two simple sugars that end in ose

Food and Nutrition Fats
  • Fats like carbs, fats are made up of carbon,
    hydrogen, and oxygen, but in different
  • Fats supply your body with energy, form your
    cells, maintain body temperature, and protect
    your nerves

Food and Nutrition Fats
  • Examples of Fats
  • Unsaturated Fats liquid at room temp. they are
    better for you found in vegetable oils, canola
    oil, olive oil, soybean oil, peanut oil
  • Saturated Fats solid at room temp. they clog
    you arteries, and are found in animal tissues
    fats, dairy products

Food and Nutrition Fats
  • Cholesterol a waxy, fatlike substance that is
    found in animal products
  • Your body needs a certain amount of cholesterol
    to make cell membranes and nerve tissue, certain
    hormones, and substances that aid in the
    digestion of fat
  • Two types of cholesterol HDL and LDL

  • LDL- Low Density Lipoprotein LDL is the bad
    cholesterol that helps to build and harden plaque
    in the artery walls.
  • HDL- High Density Lipoprotein HDL is the good
    cholesterol that carries LDL to the liver to be

Food and Nutrition Fats
  • A diet high in fat and cholesterol can increase
    the amount cholesterol in the blood
  • When the level of cholesterol circulating in the
    blood gets too high, deposits called plaque form
    on the walls of the blood vessels
  • Heavy plaque buildup may block blood flow to the
    heart, depriving the heart of oxygen and leading
    to a heart attack

Food and Nutrition Fats
  • Trans fats made when manufacturers add hydrogen
    to the fat molecules in vegetable oils
  • Have few of the benefits of unsaturated fats and
    many of the risks of saturated fats
  • Trans fats are one of the worst kinds of fats.
    They have been outlawed in many major cities

Food and Nutrition Proteins
  • Protein nutrients that contain nitrogen as well
    as carbon, hydrogen, and oxygen
  • Like carbohydrates and fats, proteins can serve
    as a form of energy. The most important function
    of proteins is their role in growth and repair of
    your bodys tissue.

Food and Nutrition Proteins
  • Examples of Proteins
  • Complete Proteins contain all 9 essential amino
    acids chicken, beef, pork, fish, eggs
  • Incomplete Proteins
  • Contain a few of the essential amino acids
    plant sources such as beans, nuts, or rice

Food and Nutrition Protein
  • Man vs. Wild- Bear Grylls
  • http//

Food and Nutrition Proteins
  • Amino Acids substance in protein- when broken
    down by the digestive system amino acids are
    absorbed into the bloodstream and reassembled by
    cells to form the kinds of protein you need

Review Quiz
  • Two things fat does for your body?
  • Most important function of protein?

Food and Nutrition Section 1
  • Section 1 Review Page 199- answer 1-6 Key ideas
    and Vocabulary
  • Copy charts on pages 203 204 and 207
  • List the vitamin or mineral two food sources
    (preferably foods you eat) and the most important
    function of the vitamin or mineral.

Food and Nutrition Building Healthy Skills-
Breaking a Bad Habit
  • Define the habit you want to change
  • Set your goal
  • Design an action plan
  • Build a supportive environment

Food and Nutrition Vitamins
  • Vitamins nutrients that are made by living
    things, are required only in small amounts, and
    that assist many chemical reactions in the body
  • Vitamins do not directly provide you with energy
    or the raw materials of which your cells are made

Food and Nutrition Vitamins
  • Examples of Vitamins
  • Fat-soluble vitamins dissolve in fatty
    materials- vitamins A,D,E,K occur in vegetable
    oils, liver, eggs, certain vegetables
  • Water-soluble vitamins dissolve in water-
    vitamins B,C found in fruits and vegetables

Food and Nutrition Vitamins
  • Fat-Soluble Vitamins Chart, Page 203
  • Water-Soluble Vitamins Chart, Page 204

Food and Nutrition Proteins
  • Antioxidants help protect healthy cells from the
    damage caused by the normal aging process as well
    as from certain types of cancer
  • Vitamins C,E are two of the most powerful
  • C- citrus fruits, strawberries, broccoli,
    tomatoes, potatoes
  • E- vegetable oil, whole grains, seeds, nuts,
    peanut butter

Food and Nutrition Minerals
  • Minerals nutrients that occur naturally in rocks
    and soil, absorbed by plants and their roots
  • Seven minerals essential for good health
    calcium, sodium, potassium, magnesium,
    phosphorus, chlorine, and sulfur

Food and Nutrition Minerals
  • Calcium play an important role in preventing
    blood clots, function of the nervous system, and
    the formation and maintenance of bones and teeth
  • Osteoporosis a condition in which the bones
    gradually weaken
  • Your calcium intake now can help build stronger
    bones now to avoid osteoporosis later in life,
    especially in women

Food and Nutrition Minerals
  • Anemia a condition in which the red blood cells
    do not contain enough hemoglobin
  • People suffering from anemia are often weak and
    tired, and may become sick easily
  • Anemia is a result of iron deficiency

Food and Nutrition Minerals
  • Minerals Chart, Page 207

Review Quiz
  • Plants absorb minerals through?
  • What are the two water-soluble vitamins?

Food and Nutrition Water
  • About 65 of your body is water
  • You do not get energy from this nutrient directly
  • Nearly all the bodys chemical reactions,
    including those that produce energy and build new
    tissue, take place in water solution

Food and Nutrition Water
  • Consuming water prevents dehydration
  • Dehydration a serious reduction in the bodies
    water content
  • Symptoms of dehydration weakness, rapid
    breathing, weak heartbeat, muscle cramps
  • Sports drinks are not an alternative- Only drink
    Gatorade when participating in athletic events or
    vigorous activity

Food and Nutrition Water
  • Electrolytes dissolved substances in water that
    regulate many processes in your cells
  • Your nervous and muscular systems depend on
    electrolytes, such as sodium and potassium

Food and Nutrition Section 2
  • Section 2 Review Page 209- Key Ideas and

Food and Nutrition Guidelines for Healthful
  • Make smart food choices
  • Balance food and physical activity
  • Seek further education in health and physical
    activity, the more you know the better off you

Food and Nutrition Guidelines for Healthful
  • Make a Meal Plan What did you eat for breakfast,
    lunch, and dinner yesterday? What did you eat for
    breakfast today?