nutrients in food in science grade 8 ggg

Science

1. NUTRIENTS IN FOOD

2. Nutrition
Is the study of food to the
health of an individual,
community, and society
and the process through
which food is used to
sustain life and growth

3. Why do we need food?
Food keeps us healthy
and helps us grow
Food gives us energy to be
able to do things during
the day

4. Molecules in food that
nourish the body by
providing energy and
materials essential for
growth and development
NUTRIENTS

5. What Should We Be Eating?

6. Carbohydrates
▪Main energy source
▪Broken down into sugar which is
distributed to the different cells
of the body

7. Proteins
-Building blocks of proteins
▪Build and repair tissues
Amino acids
▪For the synthesis of enzymes,
hormones and unibodies

8. Fats
▪Also energy-providing foods
▪Eating fat-rich food is an excellent
way of storing energy for future
use

9. Vitamins
▪Complex organic molecules
are needed in small amounts
and cannot be manufactured
by the human body.

10. Water-soluble
Fat-soluble

11. Fat-soluble
▪Can be stored in the fats of
the body
▪Vitamins A, E, and K

12. Water-soluble
▪Cannot be stored in the body
and must be supplied in the
daily diet

15. ▪
▪
▪
▪

16. Minerals
▪Inorganic substances that do not
provide energy but are important
in different bodily functions

17. Water
▪Humans are made up of 70%
water
▪biological solvent

18. Fiber/ roughage
▪Indigestible fibrous material
found in vegetables and fruits
▪Made up mainly of cellulose

19. What food should you
avoid or limit?

22. Spot the Difference
What is the difference between food groups and types of nutrients?
Food groups Types of nutrients

23. Almost 2 in 3
Australianadults(63%) are
overweight or obese and 1 in 4
Australianchildren(25%) are
overweight or obese.Obesity is
most likely caused by a person
eating more calories than they
burn off. Modern lifestyles, easy
access to high calorie foods and
low activity jobs, make weight
gain more likely. Obesity costs
the Australian society billions of
dollars per year in healthcare
costs.
Obesity in Australia
What is Obesity?
“Obese” is used to describe
somebody who is very overweight.
Being obese increases your risk of
developing serious and potentially
life-threatening diseases including
heart disease and type 2 diabetes.

24. Foods and Drinks High in Fat and Sugar
These foods provide the body with energy, warmth and insulation around vital
organs.
Too much fat in your diet can raise cholesterol, which increases the risk of heart
disease
A small amount of fat is an
essential part of a healthy,
balanced diet. Fat is a source of
essential fatty acids such as
omega-3 because the body can't
make them itself. Fat helps the
body absorb vitamins A, D and E