1. Who is most likely to get sick?
Section 9.3 – Science 24

2. What puts you at risk of getting sick?
In Canada, how long do you think males and females live on average?
Females = 81 Male = 75
In Sierra Leone, an African country?
Females = 35 Male = 33
Why are they so different?

3. What about communicable diseases?
How many people do you think die from
communicable diseases every year in Canada? 6%
How many in Sierra Leone?
42%
Why?

4. What about non-communicable diseases?
How many people do you think die from non-
communicable diseases every year in Canada?
86%
How many in Sierra Leone?
47%
Why?

5. So what puts us at risk?
As a group, brainstorm things that no matter where you live, would increase your chance of getting sick?

6. RISK FACTORS Risk factor Possible Disease Source of Risk
Not eating properly
Obesity, diabetes, heart disease, cancer
Economic, social
Drinking unclean water
Diarrhea, parasites, E.coli
Economic
Not having a toilet
Diarrhea, tuberculosis, parasites
Poor Personal Hygiene
Food Poisoning, Tuberculosis
Having sex
AIDS, STDS
Social
Smoking Tobacco
Emphysema, Bronchitis, Cancer
Excess Alcohol
Liver disease, Malnutrition, Dementia

7. Do you think such living conditions are acceptable?
DID YOU KNOW
More than one billion people lack clean water
More than two billion people lack toilets
Every year, nearly a billion people suffer from illnesses caused by contaminated water.
Over half of the children that die every year die from malnutrition
Do you think such living conditions are acceptable?

8. KEEPING OURSELVES SAFE

9. SPOILED FOOD
Food spoilage - "You know that green, fuzzy thing on the top shelf at the back?  I think it just became a mother!"

10. FOOD POISONING Recalled pet food blamed for more than 100 deaths
Nearly 30 elementary school children in the Philippines have died after eating fried cassava balls obtained from a vendor.
March 9, 2005
Deaths from food poisoning caused by bacteria such as Salmonella may kill double the number of people previously thought, according to a large-scale Danish study.
Recalled pet food blamed for more than 100 deaths
March 27, 2007
Health department inspects restaurant
Six students who became ill had eaten at burrito chain
University of Texas, June 2004

11. So what can we do???
Turn to pg. 168 – and copy down a short note about what each of these methods does to decomposers
CANNING
SMOKING / DRYING
PASTEURIZATION
VACUUM PACKING
SALTING
CHEMICAL ADDITIVES
REFRIGERATION
IRRADIATION

12. Now it’s your turn…
Work on “How does food preservation keep food safe” worksheet.
When finished, work on the Think and Link Investigation “Let’s go on a picnic!”
Read the “Spoiled Food Test” – for laughs – it is not to be taken seriously!!