week 5 - principles of weight control

Question 1

how are overwight and obesity defined, classified and assessed?

Answer 1

overweight/obesity: When weight reaches a level that is associated with higher risk of disease and disability/death
classified: * 
Underweight: <18.5 
* Normal range: 18.5 - 24.9 
* Overweight >25 
* Pre-obese: 25.0 - 29.9 
* Obese class 1: 30.0 - 34.9 
* Obese class 2: 35.0 - 39.9 
* Obese class 3: >40

Question 2

What factors besides energy in & energy out may
have a role in development and maintenance of
weight gain?

Answer 2

• behavioural and other factors come into play in terms of gainaing/weight loss
  1. Medications - depression/anxiety medication can facilitate weight gain
  2. Disease states will affect energy in vs energy out
  
  1. Type 2 diabetes
  2. Acute disease state: utilitsing more energy out to regenerate new cells
     
     3. Social factors: indiviauls heritage/culture affect how they eat/what they eat
     4. Psychological factors
     5. Emotional eating
     6. Leptin/grehlin - hunger hormones
        * One keeps you feeling full
        * The other tells you you are hungry
     7. Genetics and intrauterine imprinting/ epigenetics:
• Epigenetics: the study of changes in organisms caused by modification of gene expression rather than alteration of the genetic code itself
• Study: looked at what pregnant women ate while pregnant and how that affected their offspring

Question 3

What strategies are used to assist person with
losing weight and/or maintaining weight loss?
¤ What are their limitations?

Answer 3

1. diet and nutrition
2. activity
3. cognitive behavioural therapy
4. pharmacotherapy
5. surgury