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Introduction to Carbohydrates

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Introduction to Carbohydrates Chapter 17 – PowerPoint PPT presentation

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Title: Introduction to Carbohydrates


1
Introduction to Carbohydrates
  • Chapter 17

2
What do you know about carbohydrates?
3
What would you like to know about carbohydrates?
4
True or False?
  • Carbohydrates are the primary energy source for
    the brain and nervous system.
  • Each gram of a carbohydrate releases 9 Calories
    of energy.
  • A healthy diet needs a combination of both
    complex and simple carbohydrates.
  • A large amount of sugar in the diet can cause
    diabetes.

5
True or False?
  • Carbohydrates should make up about 58 of your
    daily Calorie intake.
  • You should consume 3 or more servings of
    whole-grain products per day to help reduce the
    risk of coronary heart disease, help with weight
    maintenance, and lower the risk for other chronic
    diseases.
  • You should consume 14 grams of fiber per day.

6
True or False?
  • The major source of added sugar in the diet is
    regular soft drinks.
  • Limiting or eliminating carbohydrates from your
    diet will help you lose weight.
  • Large quantities of sucrose in the diet can
    promote tooth decay and obesity.

7
Carbohydrates are the primary energy source for
the brain and nervous system.
  • This is TRUE. Without carbohydrates, your body
    will undergo ketosis. This is an abnormal body
    process that causes the formation of acetone,
    acetoacetate, and ß-hydroxybutryrate. Ketosis can
    cause fatigue, constipation, nausea, and
    vomiting. Potential long-term side effects of
    ketosis include heart disease, bone loss, and
    kidney damage.

8
Each gram of a carbohydrate releases 9 Calories
of energy.
  • This is FALSE. Carbohydrates and proteins
    release 4 Cal/gram. Fats release 9 Cal/gram.
    Note that 1 g of fat doubles the Calories! You
    should reduce fat if you wish to reduce your
    daily caloric intake.

9
A healthy diet needs a combination of both
complex and simple carbohydrates.
  • This is TRUE. Your diet should consist of more
    complex carbohydrates than simple carbohydrates.
  • See the next two slides for examples of each.

10
(No Transcript)
11
Types of Carbohydrates
12
Sources of simple sugars
  • brown sugar            
  • invert sugar
  • corn sweetener      
  • lactose
  • corn syrup            
  • maltose
  • fructose  
  • molasses
  •           
  • fruit juice concentrate    
  • raw sugar
  • glucose (dextrose)        
  • table sugar (sucrose)
  • high-fructose corn syrup    
  • syrup
  • honey

13
Sources of complex carbohydrates
  • Bran
  • Oatmeal
  • Barley
  • Cornmeal
  • Soybeans
  • Whole grain breads
  • Whole grain cereals
  • Pastas
  • Starchy vegetables like corn and potatoes
  • Yams
  • Fresh fruit
  • Peas
  • Dry beans
  • pinto, navy, kidney, and black

14
A large amount of sugar in the diet can cause
diabetes.
  • This is FALSE. So far, a diet high in calories,
    being overweight, and an inactive lifestyle are
    the main risk factors for Type 2 diabetes.

15
Carbohydrates should make up about 58 of your
daily Calorie intake.
  • This is TRUE according to the USDA guidelines.
    This does vary throughout the world due to the
    differences in staple foods.

16
You should consume 3 or more servings of
whole-grain products per day to help reduce the
risk of coronary heart disease, help with weight
maintenance, and lower the risk for other chronic
diseases.
  • This is TRUE according to the USDA Dietary
    Guidelines for Americans, 2005

17
You should consume 14 grams of fiber per day.
  • This is FALSE. It is 14 grams of fiber per 1000
    calories consumed. Increasing the amount of
    fiber in your diet can reduce constipation,
    reduce your risk of heart disease, cancer,
    diabetes, gallstones, and kidney stones, and can
    help with weight loss. Foods containing plenty of
    fiber have more bulk than low-fiber foods. If
    taken in the right form at the right time and at
    sufficient quantities, fiber can sometimes slow
    the onset of hunger.

18
The major source of added sugar in the diet is
regular soft drinks.
  • This is TRUE.
  • Source Guthrie and Morton, Journal of the
    American Dietetic Association, 2000.

19
Limiting or eliminating carbohydrates from your
diet will help you lose weight.
  • This is FALSE. Remember, calorie for calorie,
    carbohydrates proteins. The key here is to
    choose your carbohydrates wisely. Although your
    body does not know the difference between natural
    sugar and added sugar, foods that contain added
    sugar supply calories but few nutrients.

20
Large quantities of sucrose in the diet can
promote tooth decay and obesity.
  • This is TRUE. See page 470 for an explanation on
    how simple sugars promote tooth decay. As far as
    obesity, sucrose is normally added to foods that
    contain little or no other nutritional value.

21
So, what did you learn today?
22
Sources Used
  • http//www.health.gov/dietaryguidelines/dga2005/do
    cument/
  • http//www.uwsp.edu/centers/studenthealthpromotion
    /NewSHPOsite/OfficeStaff/HAStaff/2004to2005Staff/P
    aul20Bell/carbohydrate_facts.htm
  • http//www.flowersfoods.com/FFC_NutritionCenter/Ca
    rbohydrateQuiz/index.cfm

23
Sources Used
  • http//www.healthcastle.com/nutrition-myths.shtml
  • http//www.ehealthmd.com/library/fiber/FIB_benefit
    s.html
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