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

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?

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?

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?

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

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

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?

KEEPING OURSELVES SAFE

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

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

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

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!!