Week 4: Health-Compromising Behaviours Flashcards
Health compromising behaviours are prone to…
Stigmatisation
What are health-compromising behaviours?
Behaviours that harm your current or future health
What are the characteristics of health-compromising behaviours?
- Windows of vulnerability
- Social (peer) influence
- Pleasurable, and ironically, reduce stress
- Develop gradually at diff. stages of vulnerability
- Sig. overlap in risk factors/causes that trigger a host of unhealthy behaviours
What are windows of vulnerability?
Certain stages in life where people are vulnerable
What is obesity?
A medical condition, defined by excessive accumulation of body fat
How is obesity “diagnosed”?
Based on one’s Body Mass Index (BMI)
How is BMI calculated?
W / (H x H)
What are the categories for BMI?
Normal: 19-24 kg/m2
Overweight: 25-29 kg/m2
Obese: >30 kg/m2
What is the percentage of people who are miscategorised based on their BMI?
18%
What other info is required to make a firm diagnosis?
E.g. Body fat, family history, lifestyle
What are the reasons for increases in obesity?
- Increase in wealth
- Increase in caloric intake
- Increase in portion sizes
- Increase in fast food and microwaveable foods
What are the health complications for obesity?
- Contributes to death for all forms of cancer
- Strongly tied to various cardiovascular-related diseases (e.g. atherosclerosis, heart failure, hypertension) & Type II diabetes
- Increased risks/complications in surgery, anesthesia administration and childbearing
- Linked to poorer cognitive skills as early as in adolescence
==> Central adiposity, or abdominally localised fat, is especially potent in predicting these conditions - Disability and early mortality
- More physiologically reactive to stress (fat tissues promote inflammation)
- More psychologically distressed due to stigma
What are the risk factors for obesity?
- Social class (and values)
- Social networks
- Dieting
- Stress and depression
How is social class a risk factor for obesity?
- In US, low SES women more likely to be obese than high SES women (but not for men)
- In SG, parents’ education level and household income is positively associated with BMI knowledge and negatively associated with children’s BMI
How are social networks a risk factor for obesity?
- A person’s chance of becoming obese increases substantially when surrounded by friends, siblings, or partners who have become obese
- Social networks determine SOCIAL NORMS about obesity
How is dieting a risk factor for obesity?
1) Dieting reduces metabolism
2) Set point theory of weight
How does dieting lead to obesity by reducing metabolism?
- When dieting, body tries to enhance efficiency of food use by lowering metabolic rate
- Once dieters resume their normal food intake, the body’s metabolic rate stays low, making weight gain easy
How does dieting lead to obesity based on the set point theory of weight?
- Everyone has an ideal biological weight (“the set point”) that does not change easily
- When on diet, the body actively tries to get its weight back to set point, making it harder to lose weight
How is stress and depression a risk factor for obesity?
- For normal eaters (non-dieting and non-obese), stress actually suppresses physiological cues of hunger
- For those who are overweight or obese, stress tends to REDUCE SELF-CONTROL and DISINHIBIT FOOD CONSUMPTION
- Vicious cycle of stress eating, depression and obesity
What is the vicious cycle of stress eating, depression and obesity?
Stress eaters are more likely to experience fluctuations in negative emotions and feelings of depression
Ppl who are depressed are also more likely to gain weight, and in turn, become more depressed, and respond by stress eating
What are the interventions for obesity?
- Weight-loss programs and diets, regular exercise and sleep
- Surgery to reduce stomach’s capacity to hold food
- CBT
- Prevention within families
- Social engineering
How do weight-loss programs work as interventions for obesity?
Provide strict low fat and low carbohydrate diets
Help initially, but not sustainable on their own
How does maintaining regular exercise and sleep work as interventions for obesity?
Essential in increasing and regulating metabolism
What are the types of surgery to reduce stomach’s capacity to hold food?
- “Stapling up” stomach
- Lap band surgery: Implant a band at top of stomach to restrict food inflow into stomach
What are the side effects of surgery as interventions for obesity?
Gastric and intestinal distress
How does CBT work as an intervention for obesity?
CBT with additional focus on attentional retaining, exercise, stress management and social support