4: Overweight and obesity in childhood

Question 1

What are the BMI thresholds for each weight status?

Answer 1

<18.0 = underweight

18. 0 - 24.9 = healthy weight
19. 0 - 29.9 = overweight
20. 0 - 39.9 = obese
21. 0+ = severely obese

Question 2

Above which centiles on a growth chart are you clinically

a) overweight
b) obese?

Answer 2

a) Overweight is > 91st centile

b) Obese is > 98th centile

Question 3

How much physical activity is recommended per day for

a) children over 5
b) children under 5 who can walk?

Answer 3

a) Children < 5 = 1 hr per day

b) Under 5 but walking = 3 hrs of walking per day

Question 4

Less than how much screen time is recommendended for children?

Answer 4

< 2 hrs

Question 5

How much fruit and veg is recommended for children each day?

How much of it should be veg?

Answer 5

5 a day

3 portions of veg

Question 6

What does Z score mean in terms of growth charts?

Answer 6

How many standard deviations above or below normal you are

Question 7

What reduction in SDs is needed per year to reduce an obese child’s chances of CHD?

Answer 7

- 0.10 to - 0.25 SDs

Question 8

With intervention, how many SDs will an obese child lose per year on average?

Answer 8

- 0.20 to - 0.30 SDs

Question 9

What is the target weight loss per year for an obese adult?

Answer 9

< 5% of total weight per year

Question 10

When is bariatric surgery indicated for obese children?

Answer 10

> 3.5 SDs above healthy weight