Docstoc

Nutrients Have Class Too

Document Sample
Nutrients Have Class Too Powered By Docstoc
					• The study of how
  your body uses
  the food you eat.
• A nutrient is a chemical substance in the body
  that helps maintain the body.
• Your body needs over 50 different nutrients
  which can be divided into 6 classes:
  – Carbohydrates
  – Fats
  – Proteins
  – Vitamins
  – Minerals
  – Water
                  Carbohydrates
• Functions                 • Sources:
  – Provides body main        – Sugars—honey, jam
    source of energy          – Fiber sources—fruits,
  – Provide bulk                vegetables, whole grains
  – Helps the body digest     – Starch sources—breads,
    fats                        cereals, pasta
• Types
  – Simple –Sugars
  – Complex
     • Starches and Fiber
                           Fats
• Functions                     • Types
  – Provides energy               – Fatty Acids
  – Carries fat-soluble              • Saturated –raises LDL
    vitamins                         • Polyunsaturated-
                                       decreases LDL
  – Protects vital organs and
                                     • Monounsaturated-
    provides insulation                decreases LDL and
  – Provides essential fatty           increases HDL
    acids                         – Cholesterol
• Types                              • LDL-”bad cholesterol”
                                     • HDL-”good cholesterol”
  – Fatty Acids
  – Cholesterol
                Sources of Fats
•   Cheese
•   Butter
•   Nuts
•   Meats
•   Dressings
•   Chocolate
                      Proteins
• Functions                    • Sources
  – Build and repair tissues     –   Meat-Complete
  – Help body make               –   Milk-Complete
    important substances         –   Eggs-Complete
  – Regulate body processes      –   Fish-Complete
  – Supply energy                –   Nuts-Incomplete
• Types                          –   Legumes-Incomplete
  – Complete: contains
    adequate amounts of all
    essential amino acids
  – Incomplete: Lacks some
    amino acids
• Can be divided into two main categories
• Fat-soluble vitamins
  – dissolve in fats
  – can be stored in fatty tissues of the body
• Water-soluble vitamins
  – dissolve in water
  – are not stored in the body
• Minerals can also be divided into two
  categories:
• Macrominerals are needed in amounts of 100
  mg or more per day.
• Trace elements are needed in amounts less
  than 100 mg per day.
                       Water
• Functions                   • Sources
  – Aids digestion and cell     –   Water
    growth and maintenance      –   Milk
  – Facilitates chemical
    reactions                   –   Fruits and Vegetables
  – Lubricates joints and       –   Other Liquids
    cells                       –   Some Foods
  – Regulates body
    temperature
  – Overall well-being
                        Not getting enough nutrients can lead to deficiency diseases

Deficiency                      Diseases                             Symptoms
Protein-energy                  Kwashiorkor                          Edema, irritability,
malnutrition                                                         anorexia, enlarged liver
Vitamin D and Calcium           Osteoporosis/Rickets                 Brittle bones and bow legs
Iodine                          Goiter                               Swelling of the thyroid
                                                                     gland
Iron                            Anemia                               Fatigue, weakness, poor
                                                                     appetite, constipation
Thiamin                         Beriberi                             Affects nervous system,
                                                                     pain, vomiting, difficulty
                                                                     walking
Niacin                          Pellagra                             Diarrhea, dermatitis,
                                                                     dementia
Vitamin C                       Scurvy                               Spongy, bleeding gums
Vitamin A                       Night blindness                      Difficulty or inability to see
                                                                     in low light or darkness
• As with everything, too much of any one thing
  is not good for you and the same thing goes
  for nutrients.
• Excess energy nutrients-carbohydrates, fats,
  and proteins-can lead to unhealthy weight
  gain
• Excesses of some vitamins and minerals can
  lead to toxicity (poisoning) and other
  complications
• Write down what you ate on yesterday.
  – For each food you ate, list the nutrient class that it
    would fall under.

				
DOCUMENT INFO
Shared By:
Categories:
Tags:
Stats:
views:16
posted:7/13/2012
language:simple
pages:18