HFN1O Mr. MacMillan

*Body Composition and Obesity

*Determining the Right Weight for You

*Overweight: increased body weight in relation to height

*Body mass index (BMI): a formula for weight assessment based on a weight-to-height relationship

*Obesity

*Mild: 20 to 40 percent over ideal weight

*Moderate: 41 to 99 percent over ideal weight

*Severe, morbid, or gross: 100 percent or more

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*Assessing Fat Levels

*Body mass index (BMI)

*Weight (kg) / height squared (m2)

*Healthy weight is a BMI of 19 to 25.

*Overweight is a BMI of 25 or more.

*Obese is a BMI of 30 or more.

*What is your BMI?

*What would be problematic about this number?

*Body Mass Index: Are You at a Healthy Weight?

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*Waist Circumference and Ratio Measurements

*Waist circumference should be less than:

*Men: 40 inches

*Women: 35 inches

*Waist-to-hip ratio should be less than:

*Men: 1.0

*Women: 0.8

*Overview of Various Body Composition Assessment

Methods

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* Overview of Various Body Composition Assessment Methods (cont.)

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*Typical Body Composition

*Factors Contributing to Obesity

*Heredity

*Body type and genes

*Twin studies

*Observe twins separated at birth and raised in different environments

*Specific obesity genes

*Ob gene

*Activity Break: Environmental Factors

*List environmental factors that can directly or indirectly contribute to obesity.

*1 to 2 minutes

*We will compile a list.

*Managing Your Weight*Keep weight control in perspective.

*Understand calories.

*Include exercise.

*Improve eating habits.

*Select a nutritional plan.

* The Concept of Energy Balance

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*The “Eat” Response

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Obesity Trends* Among Canadian AdultsHPS, 1985

(*BMI 30, or ~ 30 lbs overweight for 5’4” woman)

Katzmarzyk PT. Can Med Assoc J 2002;166:1039-1040; Statistics Canada 2002/04

No Data <10% 10%-14% 15-19% 20-25% 25+%

Obesity Trends* Among Canadian AdultsHPS, 1990

(*BMI 30, or ~ 30 lbs overweight for 5’4” woman)

Katzmarzyk PT. Can Med Assoc J 2002;166:1039-1040; Statistics Canada 2002/04

No Data <10% 10%-14% 15-19% 20-25% 25+%

Obesity Trends* Among Canadian AdultsNPHS, 1994

(*BMI 30, or ~ 30 lbs overweight for 5’4” woman)

Katzmarzyk PT. Can Med Assoc J 2002;166:1039-1040; Statistics Canada 2002/04

No Data <10% 10%-14% 15-19% 20-25% 25+%

Obesity Trends* Among Canadian AdultsNPHS, 1998

(*BMI 30, or ~ 30 lbs overweight for 5’4” woman)

Katzmarzyk PT. Can Med Assoc J 2002;166:1039-1040; Statistics Canada 2002/04

No Data <10% 10%-14% 15-19% 20-25% 25+%

Obesity Trends* Among Canadian AdultsCCHS, 2000

(*BMI 30, or ~ 30 lbs overweight for 5’4” woman)

Katzmarzyk PT. Can Med Assoc J 2002;166:1039-1040; Statistics Canada 2002/04

No Data <10% 10%-14% 15-19% 20-25% 25+%

Obesity Trends* Among Canadian AdultsCCHS, 2002

(*BMI 30, or ~ 30 lbs overweight for 5’4” woman)

Katzmarzyk PT. Can Med Assoc J 2002;166:1039-1040; Statistics Canada 2002/04

No Data <10% 10%-14% 15-19% 20-25% 25+%

Obesity Trends* Among Canadian AdultsCCHS, 2004

(*BMI 30, or ~ 30 lbs overweight for 5’4” woman)

Katzmarzyk PT. Can Med Assoc J 2002;166:1039-1040; Statistics Canada 2002/04

No Data <10% 10%-14% 15-19% 20-25% 25+%

*Increasing Childhood Obesity Canada, 1981-1996

0

5

10

15

20

25

30

1981 1996 1981 1996

GirlsBoys

Overweight

Obese

*Measured Overweight Ages 2-17 years

CPHI. Promoting Health Weights. 2006.

24

in Motion Ban on Junk Food in Schools

Nutrition North CanadaBuilding on

Existing Strengths

Baby Friendly Initiative

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*Fad Diets

*Research a fad diet and provide details to the class.

*What is the diet composed of?

*Who created it? Where was it found?

*List any interesting information about the diet