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NUTRIENT
What is nutrition science?
 Nutrition Science is the study of the effects of
food components on the metabolism, health,
performance and disease resistance of
humans and animals. It also includes the
study of human behaviors related to food
choices.
Nutrients
 The food you eat is a source of
nutrients.
 Nutrients keep your
body functioning.
Your body needs nutrients
to…
 Work as a fuel/energy
 Help you grow
 Repair itself
 Maintain basic bodily
functions.
Balance is Key
For years, people held to the idea that
there are “bad” nutrients and “good”
nutrients when, in fact, all nutrients play a
certain role in the body. Even those
nutrients once considered “bad” such as
fats and carbohydrates perform vital
functions in the body and if one consumes
too many “good” nutrients such as
vitamins or minerals there can be harmful
results, as well.
 Balance - Eat foods from all of the
food groups.
 Variety - Eat different foods from
each food group.
 Moderation – Do not eat excessively
from any group and portion size
The 6 Essential Nutrients
1. Water
2. Carbohydrates
3. Protein
4. Lipids (Fat)
5. Vitamins
6. Minerals
What is an Organic
molecule?
 What is an Organic molecule?
 Organic molecules contain Carbon
 Organic molecules, substances that contain
carbon-hydrogen bonds.
What is an Inorganic Molecule?
 Molecules that DO NOT contain carbon.
 DO NOT have carbon-hydrogen (C-H) bonds;
generally they are simple and not normally
found in living things.
 Water & minerals are considered inorganic
molecules
Monomers & Polymers
A monomer is a molecule that is able to bond in
long chains.
Here is a monomer:
Here is a polymer:
 A large molecule made from many similar
small molecules called subunits or monomers
 In other words, Each MONOMER is a BUILDING
BLOCK in the structure of a POLYMER
3 major classes of organic
compounds
Class
Subunit/
Monomer
Polymer
Carbohydrates
Poly
saccharides
Lipids
Sugar
Monosaccharide
Fatty acids
Proteins
Amino acids
Proteins
Lipids
Macronutrients vs. Micronutrients
 Provide the body
with energy
 Are required in
large amounts
 Examples:
Carbohydrates,
lipids & proteins
 Do NOT provide
the body with
energy
 Are NOT required
in large amounts
 Examples:
vitamins and
minerals
Water
 Although water does not provide the body
with energy it is required in large amounts so
it is in a category of its own.