Lecture 13

Question 1

How is overweight and Obesity defined?

Answer 1

As abnormal or excessive fat accumulation that presents a risk to health

Question 2

What is excessive body fat characterised by?

Answer 2

Characterised by excessive accumulation and storage of fat in the body. For an adult this is indicated by a BMI of >30

Question 3

What are the individual differences in the effect of diabetes/fat on the body

Answer 3

1. Amount of excess fat stored
   - >BMI is a population index
2. Distribution of fat
3. Associated Health Consequences

Question 4

What is the equation for BMI?

Answer 4

weight (kg) / height (m2)

Question 5

What is the correlation of BMI to body fat?

Answer 5

r = 0.8

Question 6

What area of fat is associated with adverse health effects?

Answer 6

Abdominal

Question 7

What are the BMI ranges?

Answer 7

<18.50 = underweight
18.50 - 24.90 = healthy weight
>25 = overweight
>30 = obese

Question 8

Why should we classify levels of obesity?

Answer 8

1. Allows comparison of weight status in a population
2. Makes groups at increased risk identifiable
3. Priorities can be identified for intervention
4. Provides basis for evaluation of interventions

Question 9

What is the prevalence of Obesity in NZ?

Answer 9

-Prevalence has large increase in late adolescence and continues to increase throughout life before decreasing after 70’s

Question 10

What proportion of NZ is obese/overweight?

Answer 10

70%

Question 11

Raised MBI is a major risk factor for what NCD’s?

Answer 11

• Cardiovascular disease - mainly heart disease and stroke
• Diabetes - Type 2
• Musculosketal disorders - osteoarthritis
• Some cancers

Question 12

What can increase CVD risk?

Answer 12

High weight status as a young person