Transcript PowerPoint Presentation - HOMEWORK!

HOMEWORK!- DUE MONDAY,
AT THE LATEST!!!
BRING IN MAGAZINES
 BRING IN FOOD ADS FROM
NEWSPAPER (SUNDAYS ARE THE
BEST!)
 GO TO THE GROCERY STORE AND PICK
UP A FEW!

Nutrition For Life
Chapter 7
Section 1: Carbohydrates, Fats
and Proteins
What is nutrition?

The science or study of food and the
ways in which the body uses food
What are nutrients?

Substances in food that provide energy
or help form body tissues and are
necessary for life and growth
How many nutrients are
there?

There are 6 classes:
– carbohydrates
– fats
– proteins
– vitamins
– minerals
– water
What are carbohydrates?

A class of energy giving nutrients that
include sugars, starches and fiber
What are fats?

A class of energy-giving nutrients that
are also the main form of energy
storage in the body
What are proteins?

A class of nutrients made up of amino
acids, which are needed to build and
repair body structures and to regulate
processes in the body
Why is it important to eat
these nutrients?

To stay alive, healthy and growing
– you must eat the right amount of each
nutrient
– if you eat incorrectly you can loose/gain
weight, not grow properly, sometimes die
What happens if you eat too
much fat, carbohydrates or
proteins?

They are stored as fat
– increases risk for heart disease, high blood
pressure, and other chronic diseases and
disorders

How you eat now can effect your health
in the future!!!
Food is like what to our
bodies?

Food is our fuel
– food-> body
– gas-> car

all the chemical processes that happen
in your body to keep you alive and
active is called metabolism
How do you measure food?
Calories = energy
 Calories are NOT FAT!

CARBOHYDRATES= 4 CAL/G
 PROTEIN= 4 CAL/G
 FAT= 9CAL/G

Where can you find
Carbohydrates?
Fruit
 milk
 cookies
 potatoes

– all of these contain sugars!!!!
Are there different types of
carbohydrates?

Yes!
– Simple




glucose
fructose
lactose
sucrose
– Complex



starch
glycogen
fiber
Why is fiber important?
Isn’t used for energy
 Can’t be digested
 Keeps your intestines healthy, prevents
constipation, and may help prevent
colon cancer and heart disease
 Helps trap cholesterol from food you eat
(lowers blood cholesterol)

Isn’t fat unhealthy?

No!
Why do we need to eat fat?
Body needs it in order to function
properly!
 Adds texture, flavor and aroma to our
food
 Eating too much can cause: weight
gain, heart disease and cancer

What types of fat are there?

Saturated fats: solid at room
temperature
– example: butter
Unsaturated fats: liquid at room
temperature
 Cholesterol: made by your body (liver)
and animal tissues (meat, fish, poultry,
eggs, dairy products)

What are proteins?
Made of chains called amino acids
 muscle, skin, hair, nails made mostly of
protein

Why do we need proteins?
Needed to form hormones, enzymes,
antibodies and other important
molecules
 if you eat too much it can be stored as
fat
 you need 20 different amino acids to
make up body proteins


9 of the amino acids needed to make
up body protein cannot be made by our
bodies (essential amino acids)
How much do I need?

Carbohydrates
– 45-65% of daily calories

Fats
– 25-35% of daily calories

Proteins
– 10-35% of daily calories
CLASSWORK

DO PG. 160
– #1-9
TOGETHER: #10
 TOGETHER #11
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