8
Ch j, :J' YOU WlL!. LEARN ... > What influences food choices. > How to identify accurate information about food and nutrition. How individual needs affect nutrition. Nutritional needs for athletes. TERMS TO LEARN - additives irradiated foods myth organic food vegetarian • .. that your Saturday job is bagging groceries at the supermarket. One customer buys 20 cans of mushroom soup and a package of cut-up chicken. The next person in line has a cart full of salad greens and an assortment of fresh vegetables and fruits. As you work, you Wonder what meals these shoppers have in mind. Think Abe:) ÿ.ÿt ' How would working around food impact your food choices? ° Does your knowledge about nutrition enable you to make good choices? ° If you were in charge of meal plans for your family, how would you decide what to cook every day? ' How does eating breakfast affect your school day? 415

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Page 1: Ch - staff.katyisd.orgstaff.katyisd.org/sites/0611043/Documents/PHS CHAPTER 30.pdf · insects bypassing them through a field of radiant energy simi-lar to x-rays. This process makes

Ch

j, :J'

YOU WlL!. LEARN ...

> What influences food choices.> How to identify accurate information about

food and nutrition.How individual needs affect nutrition.Nutritional needs for athletes.

TERMS TO LEARN- additives

irradiated foodsmythorganic foodvegetarian

• .. that your Saturday job is bagging groceries at the supermarket. One customer buys 20cans of mushroom soup and a package of cut-up chicken. The next person in line has acart full of salad greens and an assortment of fresh vegetables and fruits. As you work, you

Wonder what meals these shoppers have in mind.

Think Abe:) ÿ.ÿt' How would working around food impact your

food choices?° Does your knowledge about nutrition enable

you to make good choices?° If you were in charge of meal plans for your family,

how would you decide what to cook every day?' How does eating breakfast affect your school day?

415

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WHAT INFLUEN;ES FOOD CHOICES?

> Many families have theirown eating traditions.Show respect for others'cultural beliefs.You maybe surprised and find anew favorite food.

Have you ever thought about why you and your family eatcertain foods? Some of the following factors have probablyinfluenced the way you feel about food.o Family and culture. A lot of people tend to follow their

family's traditional food customs.

® Friends. Eating is a social event. When you go out withfriends, you're all likely to eat the same foods.

* Religious beliefs. Many of the world's reli-

gions give guidelines on food and eating.. Emotions. People often associate cer-

tain foods with feelings of comfort orlove.

* Geographical area. Differentregions or countries often featuretheir own food traditions.* Adverfishrÿg. Food-related busi-

nesses spend millions of dollarseach year to convince you to buy

their products.

® Lifestyle. The amount of time

you have for meals and how impor-tant good health is to you make a dif-

ference in the foods you choose.

o Technology. Whether you are orderinggroceries or take-out on the Internet or baking

pumpkin bread from a mix, technology is affecting yourchoices. Have you tried using the computer to track hownutritiously you eat or to download new recipes?

you've

myths iniÿ an untbelieve.

The prapples, Jfoods aÿfacts? Eathe brair• Apples

every. Preferc. "Healt

mean

tioustional

ps the doctor away.o We're born with a preference for rich, fatty foods.® Health food stores have the_healthiest_foods.

Eating before a test fuels the brain.

416 0NIT 8 Food and Nutrition

When the topic of food comes up, should you believe all ofthe claims made? How would you evaluate the followingstatements?

GETTIN I THE FACTS

You gsources

able. I-I,

some qWhoqualÿ

• WhygiveIAÿetsuch

Havand "l

or lesÿBef(

Coralprodÿ

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Food Mythsnily eatrobably

w their

You've probably heard manymyths in your lifetime. A mythis an untrue statement that peoplebelieve.

ut with

ted busi-

f dollars,u to buy

• of time

v impor-

ake a dif-

orderingr bakingLing yourrack how

[ieve all offollowing

Differentfeature

ld's reli-

Lting.:late cer-

mfort or

The previous statements aboutapples, fatty foods, and healthfoods are myths. W-hat are thefacts? Eating before a test does fuelthe brain--that is no myth!° Apples are a low-calorie, high-fiber snack food. Eating one

every clay isn't a bad idea, but it won't prevent illness.+ Preference for fat is actually acquired.+ "Health food" printed on a package doesn't necessarily

mean that what's inside is healthful. You can find nutri-tious foods in supermarkets and foods with little nutri-

tional value in health food stores.

Questions to AskYou get information about food and nutrition from many

sources. However, not all sources of information are reli-able. How can you be sure you're getting the facts? Here are

some questions you can ask:° Who wrote or made the statement? What are the person's

qualifications in regard to nutrition?° Why was the statement made? Is balanced coverage

given? Was this meant to advertise or inform?+ Are the claims supported by credible or believable sources

such as a government agency or health organization?" What do registered dieticians or doctors say?

I eaNth FoodsHave you ever wondered what the terms "good for you"

ii:. and "healthy" mean? Many "health" foods aren't any moreor less nutritious than regular food products.

i ii+ Before you buy a product, read the label carefully.

iil COmpare it with other products. Then decide whether the::-ÿ;): PrOduct is worth the extra cost.

>" Myths about foods arecommonly spread. Don'tbelieve everything youhear!

Vitamins and minerals are

key to all body processesÿthey work as a team. Keep

the following preparationtechniques in mind to main-

tain high nutrient levels:

+ Leave edible skins on veg-

etables and fruits whenev-

er possible. Most vitamins

and minerals are found

just below the skin.

+ Eat vegetables and fruits

raw or steam them just

until they're tender-crisp.

+ Cook vegetables in smallamounts of water.

+ Cut vegetables into large

pieces before cooking tolose fewer nutrients.

+ Save liquid from cookedvegetables and add it tosoups, stews, and sauces.

Cft/IPTER 30 Making Food Choices 417

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Netary 8uppnements

You probably know people who takevitamins every day. Maybe you've

heard people debate the pros and Consof taking vitamins. You may have won-dered who was right.

Most health experts agree that youdon't need a daily vitamin or mineral

supplement if you eat a variety offoods from the pyramid. An exceptionmay be if a physician recommends tak-

ing a supplement because of a healthcondition.

Some people think that taking mega-doses, or large amounts, of a vitaminor mineral will cure disease. This isn'tonly untrue, it's often dangerous.Talcing too much of any nutrient canbe harmful.

418 UNIT 8 Food and Nutrition

- Vitamin and mineralsupplements can benefitsome people. Check withyour physician beforetaking suppliments.

Food AdditivesWhy does the oil separate from some peanut butters and

not from others? What makes ice cream so smooth andcreamy? The answer lies in additives, or substances added

to food for a specific purpose.Additives keep peanut butter from separating and ice

cream smooth. They're also used to boost the nutritional

value of popular foods and increase freshness. All additivesmust pass rigid governmental tests for safety.

- Food additives keepfoods fresher longer. Forexample, homemadebreads will mold muchmore quickly than storebought breads thatcontain food additives,

Some st

have goneinsects by ilar to x-re

maintainsof these lfoods thÿlabeled oÿ

The irrthat irradcase. Mo

throughpass thro

What@

@

@

Wha1.

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lrradfated Foodso takeOU'Ve

:t consWOn-

at youaineral

.ety of:eptiontds tak-

health

,ÿ mega-

zitaminfis isn't

Lgerous.

ent can

Some stores advertise irradiated foods. These foodshave gone through a process that destroys bacteria, mold, andinsects bypassing them through a field of radiant energy simi-lar to x-rays. This process makes foods safer to eat and

maintains the quality of foods. It also extends the shelf lifeof these foods. Irradiated foods are just as nutritious asfoods that aren't irradiated. Irradiated foods must be

labeled on the package according to law.The irradiation process is controversial. Many believe

that irradiated food is radioactive. However, this isn't thecase. Most of the radiant energy used in food passesthrough the food, in much the same way as microwaves

pass through food.

and icettritionaldditives

keeponger. For=made,Id much :han store; thatdditives.

ters andoth andes added

See Chapter 28for more information

on how nutrients

work.

-,, vTRY !T

What You'll Need® 1 slice store-bought bread" 1 slice homemade breade 2 plates, 2 labels, and plastic wrap

What to Do1. Place each slice of bread on a plate. Label and date each

plate and cover with plastic wrap. Leave out at room tem-perature.

2. Observe the bread slices daily. Record the date that moldappears on each slice of bread.

To Discuss® How many days did it take for mold to appear on each

slice of bread?® What preservatives are listed on the store bread abel9® What conclusions can you draw about the value of

preservatives to the food supply?

IIB/I.PTEB 30 Making Food Choices 419

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Organic Foods

Avoiding Dehydration

When you exercise, yousweat or lose body fluids.You need to replace bodyfluids by drinking liquidsto avoid dehydration. Trydrinking an eight-ounceglass of water beforeand after you exercise.Be on the alert for theseconditions that causedehydration:

High temperatures cancause you to sweatmore.

Harder workouts cancause you to sweatmore,

® Body size can affecthow much you sweat.Smaller bodies tend tosweat less than largerbodies.

, Long workouts cancause you to losemore body fluids.

j

Different people have different nutritional needs. Theirneeds are based on their size, activity level, age, and otherfactors.

Nutfitien and Medicare Conditions

The food people eat can be linked to some medical prob-lems including high blood pressure, heart disease, cancer,and obesity. Both short- and long-term illnesses and med-ical conditions (such as diabetes) can also affect food needs.A physician or dietitian can help determine a healthful eat-ing plan.

You can purchase foodsthat have been organical-ly grown at farmers mar=kets and at some super-markets. Check yourlocal store's producedepartment for theseproducts.

INOJVHDUAL NUTMTJONAL NEEDS

Another word that you might see when shopping forfood is "organic." Organic food is food that is producedwithout manufactured chemicals. There's no difference in

nutritional value between foods grown with organic fertil.izers and those grown with chemical fertilizers. However,some people buy organic fruits and vegetables out of con-cern for health and the environment.

What iwho does

picallysometimselectionnutritioIrich in fetarian ethan nocounseli

Goodmancetire atecise forneed cÿwater.

these n

Quexÿ(

You ,,

PerspiIreplacÿafter a,

of dehfor 60activit

lFuel t

Car]athletyour tcompendu:

fuel, ilongc

420 UÿIIT 8 Food and Nutrition

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Nutrition fer Vegetariansng for'oduced

nce in: fertil-

)wever,

of con-

What is a vegetarian? A vegetarian is generally someonewho does not eat meat, poultry, or fish. Vegetarian meals aretypically made up of vegetables, fruits, grains, nuts, andsometimes eggs and dairy products. If vegetarians eat a wideselection of food, they're eating in a way that fits today'snutritional guidelines. Vegetarian meals feature plant foodsrich in fiber and complex carbohydrates.Well.planned veg-etarian eating patterns are often lower in fat and cholesterolthan nonvegetarian ones. It's important to get nutritional

counseling before following a strict vegetarian diet.

s. Their

.d other

:al prob-

, cancer,

ad med-

,d needs.

hful eat-

Nutrition for AthletesGood nutrition is important for you to reach peak perfor-

mance in any sport• Are the nutritional needs of competi-tive athletes any different from those of people who exer-cise for health and enjoyment? The answer is no. Athletesneed carbohydrates, protein, fat, vitamins, minerals, andwater. However, competitive athletes may need more of

these nutrients.

Quenching ThirstYou sweat when you're physically active--everyone does.

Perspiration evaporates from your skin, and you need toreplace the fluid you lose. Drink fluids before, during, andafter activities even when you aren't thirsty. Thirst is a signof dehydration. But what should you drink? If you work outfor 60 minutes or less, drink water. For longer, strenuousactivities, you can also dilute fruit juices to half-strength.

Fuel for Your BodyCarbohydrates are the best source of energy. If you are an.

athlete, you should plan on getting 60 to 65 percent of

Your energy needs from carbohydrates. Eating foods rich inCOmplex carbohydrates increases your athletic fitness andendurance. By using carbohydrates as your body's mainfuel, you should be able to keep up strenuous activity for a

longer time.

Medical conditions affectthe body's nutritionalneeds, Former MissAmerica, Nicole Johnson,is a diabetic. She wearsan insulin pump toregulate her body'sneed for insulin.

> A well-planned vegetariandiet is healthful, nutrition-ally adequate, and mayprovide health benefitsin the prevention andtreatment of diseases.

CHitPIER 30 Making Food Choices 421

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